MSI R9 290X Lightning & PCIe 2.0 Compatibility issues?

A week ago I purchased the 290X Lightning from Amazon (Sadly, their logistics service was horrendous and is another reason why I returned both), Instantaneously I had issues. I thought the card must have been faulty as I have a 700W Cooler Master rated PSU which could easily handle the load I would have thought... (Correct me if I'm wrong here. I did try both cards with 8+8+6 and just 8+8 Pins), so I returned it for a replacement.
Sadly, the second card also had these issues of constant rebooting or freezing/stalling on light loads or heavy loads (more frequently lighter loads oddly enough?) e.g. Using VLC or Web Browsing.
It occurred to me today that the 290X has a different method of power delivery and uses the PCI express bus slot for power too, is there any reason to speculate that my Motherboard (ASUS M4A78LT-M) with Generation 2.0 PCIe x16 slots have compatibility issues with the 290X lightnings power delivery?
I would love to try and get a working 290X lightning but I cannot waste my time and money constantly sending them back...
For reference:
My Current System:
Operating System: Windows 8.1 with Update 1 Pro N 64 Bit
CPU - AMD Phenom II X4 965
MOBO - ASUS M4A78LT-M
RAM - 2x4GB Kingston Hyper-X Blu
GPU - Sapphire HD 6850 1GB (Before MSI 290X Lightning(s))
SSD - SanDisk 128GB
HDD1/2 - 2TB WD Green / 320GB Samsung
Monitor(s) - 29" LG 29UB65 & 23" LG (Forgotten Model) Monitor
Case - Corsair 750D
PSU - Cooler Master Silent Pro M, 700 Watt, 80+ (Bronze) - NOTE: Yes the CM PSU does have two separate 8 pin PCI connectors (Each cable has 6+2 and 6 pin connectors)

Sounds like your PSU!
I myself am running an 850 Watt PSU, and with the beast of a card the Lightning is, 700 May truly not be enough.
PCI-E Gen 3.0 cards are backwards compatible with Gen 2.0, so that is not the issue. Up until last week I was running the Lightning on an Asus Saber-tooth 990 FX R2.0 board which is Gen 2.0 and had no issues. But my UPS battery alarm would go crazy when I fired up a game. This never happened when i had even 2 x GTX 780 cards in SLI, so this card alone is still pulling more juice than my system ever had (even with SLI 780's). So I would really suspect your PSU is the culprit here.
What drivers are you running? I had Bluescreen with the latest 14.6 betas and eyefinity......
(And why don't you like Amazon's logistics, I find amazon the be one of the BEST on-line e-tailors I have ever used)

Similar Messages

MSI R9 290X Lightning random BSOD reboots with 2 CARDS

Hi all. I've looked all over this forum and the web for a solution to my issue but haven't gotten anywhere.
I recently bought two MSI R9 290X Lightning cards that are MSI refurbished/recertified. Both have the same symptoms in the same known-stable PC (no other upgrades other than the card). Seemingly at random, they will reboot the computer once every one or two days. I could be playing a game or browsing the web when it happens. It doesn't appear to be stress related since I can sometimes play games for hours and also run benchmarks and stress tests with no problems. Also not temp related since the card runs very cool (20s C at idle and no more than 50s C at load). When I inspect the memory dump upon booting back up, it always says WHEA_UNCORRECTABLE_ERROR with a bugcheck code of 0x124 caused by module ntkrnlmp.exe. Upgraded from an EVGA GTX 660 that was rock solid and never BSODed, ever. And a GTX 560 Ti before that.
Nothing in my system is overclocked. I am not sure what else to try. Maybe there is a VBIOS update I need? Also, I'm not sure if this is an issue, but my motherboard has an older 760G chipset. If I leave the GPU-Z Sensors tab open, I notice as I click between windows, etc. that the memory clock jumps around between 150 MHz and 1250 MHz. Not sure if that could be an issue.
Thus far I have tried the following, and none have made a difference:
- Enabling 'Force constant voltage' in MSI Afterburner 4.0.0
- Disabling ULPS in MSI Afterburner 4.0.0
- Setting Power Limit (%) to +50 in MSI Afterburner 4.0.0
- Setting 'Unofficial overclocking mode' to 'without PowerPlay support' in MSI Afterburner 4.0.0
- Tried switching between Original and LN2 BIOS on the card
- Tried Catalyst driver 14.9, 14.11.2 Beta, 14.12
- Ensured there are two separate PCI-E cables going to the card
PC specs:
- Gigabyte GA-78LMT-USB3 mATX motherboard (BIOS version FA)
- AMD FX-4130 CPU
- 8GB (2 x 4GB) G.SKILL Sniper DDR3-1600 RAM
- MSI R9 290X Lightning
- 3x SATA HDDs
- Antec EarthWatts 650W PSU
- Antec Three Hundred case
- Windows 7 Home Premium 64-bit SP1

Quote from: wengshunfeng on 29-December-14, 04:40:08
I had same problems on my both R9 290X lighting just brought 1 month ago :(
I think it was software(driver) problem, because 2 cards both active for heavy gaming (BF4) is fine without any problems. But if I play online 3D games that does not have CF profiles, and only single card active, my pc will randomly sudden shut down and restart. The card temperature was around 50C.
Both cards running with Core i7 5960x + Asus x99 R5E + EVGA 1200W P2 PSU.
I'm sure it was not caused by my other hardwares, because I use GTX 780 before without any problem, also I used DDU in safe mode to uninstall Nvidia drivers before swap cards.
Sorry to hear you went through the same mess. From what I've read, a lot of people are having this problem with the R9 series (not just the Lightning or even the 290X).
I definitely haven't ruled out the AMD drivers as the cause. I am using Catalyst 14.12 currently but have also tried 14.11.2beta and 14.9. What happened with your cards, did you get them stable?
I achieved what looks to be complete stability on both my PCs by bumping the 2D GPU clock to 430 MHz in GPU Tweak, as I mentioned a few posts above. Wish there was a BIOS or driver update that fixed this issue, but oh well. I'd rather not go through the RMA hassle just for MSI to say they test fine or send me replacement cards that do the same thing.

MSI R9 290X Lightning hardfreezing randomly

Hello again everyone
As I've said in my first post requesting the new VBIOS that fixes the fan issues, I have recently gotten an MSI R9 290X Lightning.
I have had these problems since day 1, but I figured the new BIOS might help so I didn't mention them in my first post.
The problem is, after the installation of the card (i have not done any other hardware upgrades recently, the last upgrade i did was a year and a half ago with upgrading my PSU.) it started hardfreezing. I could only reboot the computer once it hardfroze, I could not move my mouse or do anything else. From what I have read from the one post that has pretty much exactly my symptoms ( www[dot]superuser[dot]com/questions/781673/random-hard-freezes-started-happening-after-installing-a-new-graphics-card ) is that apparently it is an incompatibility with the 700 and 800 series AMD chipsets. I would like some more confirmation though, as I have not found other sources saying that. It is still a relatively new card so the chances of someone using it on a not-so-recent mobo aren't big, so maybe that's why. Anyway, here are my specs:
CPU: AMD Phenom II X6 1050t @ 3.5 OR recently @ 2.8 (default) GHz
Mobo: ASRock 890GX Extreme 3
Memory: Kingston 4GB (x4) KHX1600C9D3/4GX
GPU: MSI R9 290X Lightning
HDD: WD Green 1TB
OS: Windows 7 64bit
PSU: Thermaltake SMART M850W
This PC NEVER hardfroze before, and the only recent upgrade is the GPU. I have also done some other attempts:
1) Switched from Normal to LN2. No change.
2) Changed drivers. No change.
3) Changed bios AND drivers (since fans work then). No change.
4) Made sure the card is not overheating (it never crashes while playing a graphically intensive game anyway, it's ALWAYS on the desktop and/or in not so demanding games)
5) According to that post, I tried overclocking (and overvolting) it, while in both Original and LN2 with the additional 6 pin plugged in. While it did last a long time, it just crashed 5 minutes into booting windows earlier, so I can't say for sure. It is somewhat random when it crashes.
6) Used a system restore point to see if it might have been a software change. No change either.
One miscelaneous note: While it was on Original bios, it ALWAYS froze when launching Afterburner. I can confirm this as it froze 4 times exactly when Afterburner was started.
This is just about the most peculiar PC issue I've ever had so I really have no idea what else to do. I also ran a memory test, everything checked out fine.
Also, as I have said. It ALWAYS crashes on light load, no load (desktop) or when firing up Afterburner on Original bios. I ran a burn test 8 hours yesterday, and it did not crash. Then, 2 minutes after the test, it crashed while I was watching youtube. I can't seem to pinpoint the cause because, as I said, sometimes it crashes 10 minutes after the reboot (I am having to type this twice because of that...) or it can crash a day after reboot.
So, start with the suggestions guys!

Are all three power connectors of the Lightning connected?

MSI R9 290x lightning

MSI gotta hand it to yea, the 290x lightning is by far the best 290x there is, loving the hell out of it. Idle temps 38 max temps 68 on stock clocks 1080/1250.Right now running stable 1200/1500 on air, idle temps 38-40 and max temps in BF4 after hours of playin 72c hahahhaha. Nice job!!!!

Quote
Normal UEFI implementations have always a fallback option to CSM to boot in legacy Mode!
A card with a (hybrid) GOP vbios doesn't boot if used on an UEFI mainboard that is not GOP compliant. Therefor socket 1155 and 2011 boards without a current GOP compliant bios are stuck with a black screen if used with a card using a GOP vbios. While it the card can work in legacy mode that is only without issues in a board with a pure legacy bios. If the UEFI board is GOP compliant legacy and UEFI booting works.
Therefor the card coming with a legacy vbios prevents rmas because of such issues. Who wants UEFI booting can request a GOP vbios. As the card already has two vbios versions (normal/LN2) there is no way for another chip.
If you want to complain further contact MSI about it: >>How to contact MSI.<<

MSI GTX 580 Lightning + Asrock Z68 Pro 3 Issue

Hi!
I just bought a new computer with gtx 580 lightning and asrock z68 pro 3 motherboard. I am having issues with the pci-e slot and the graphics card. My motherboard doesnt recognize the card. I have updated my MB bios to newest one but it didn't help. I also tried the lightning in my old gaming rig and it worked fine there. Also tried my old graphics card in my new rig and worked just fine. Power wise I should be fine because my old rig has 600w power supply and it worked, new rig has 50 wats more and is more quality PSU.
Also the red and green leds on the gtx 580 lightning are on and fans are spinning but when I try to attach the monitor it just doesnt give anything out.
I am really running out of options here and dunno what to do. I have the intel i5 2500k processor so I can use the onboard graphics to prowse the web. Also managed to install win7 64bit and MB drivers.
Anyone having this same issue ? Or any solutions to my problem? Would be nice to get my rig up and running fully.
Thanks!

Quote from: Bas on 07-September-11, 04:33:45
AsRock already tested the combination and it works:
http://forums.tweaktown.com/asrock/45683-asrock-z68-pro-3-msi-gtx-580-lightning-issue.html
Maybe the motherboard has broken PCI-e slots, as Asrock suggested, goto a dealer and check it out with them.
The combination is not a problem, but if a PCI-e slot is broken it can explain all of this.
As the card works in other systems, it's hardly possible it's the card, else it would fail too.
And yes, because an ATI card works it doesn't mean the PCI-e slot is good, have seen such before.
He replaced the board with new one Asus P8P67 Pro and still doesn't works on-board led shows VGA init error.
So 2 different brand new boards with broken slots is very unlikely. [both of them worked fine with different video cards]
The MSI's GTX 580 Lightning worked fine in meantime with the same PSU [he also tested with different one and it works fine with both PSU's on 3th board] on 3th different mainboard.
It's some kind of compatibility issue [based on all facts]
Quote
AsRock already tested the combination and it works:
http://forums.tweaktown.com/asrock/45683-asrock-z68-pro-3-msi-gtx-580-lightning-issue.html
They test it but not with the same card Lightning card, they used reference card instead [MSI N580GTX-M2D15D5].
The VBIOS structure of the non reference design used on Lightning cards are very different compared to regular versions,
as well the card itself compared to reference one.

MSI GTX 680 LIGHTNING having MSAA ANTI ALIASING ISSUE

Hey guys!
I have a question concerning my GPU. I would like to know if anyone thinks this is a faulty card or is there something I need to do to fix the issue.
MSAA Anti-Aliasing is causing a very weird blood graphic issue... Toggle it off and the blood looks fine, turn it too 2,4 or 8 and the blood is outlines in glowing yellow craziness(see image link below)!
My card is stock and has never been OC. I've re installed the game, done clean installs of GPU drivers but the error still persists(only if MSAA Anti Aliasing is enabled). Prior to installing new drivers I was getting a OPEN GL error 3 code , the new drivers seem to have fixed that.
This is zoomed in using a camera, it looks the same at all distances. The yellow trace around the blood shines like a light in game. This does not happen randomly, all blood splatter in the grass looks this way when
MSAA Anti-Aliasing is enabled.
Hope someone can help!
Thanks for reading,
cheers!

Quote from: Svet on 13-February-13, 10:31:43
list full system specifications, read >>Posting Guide<<
does the same hapends in other games?
what vga drivers you use?
Hey thanks for replying! Sorry I will post my system info below.
I just updated my drivers to 313.96 from 310.70. With the 310.70 driver I was experiencing the MSAA issue(above post) but also with the I was getting a full game crash after 20-30 mins of game play. The 313.96 resolved the crash but not the MSAA issue.
System
Board- ASUS|P8Z77-V PRO Z77
VGA- MSI 680GTX LIGHTNING
PSU -CORSAIR | AX1200I 1200W RT
CPU- INTEL|CORE I7 3770K 3.5G 8M R
MEM- 4Gx4|CORSAIR CMZ16GX3M4X1600C9
SSD -240G|INTEL SSDSC2CT240A3K5 R
HDD- 1 TB WD Black Caviar
COOLER- WATER COOLER CORSAIR| CWCH100 R
OS- WIN7 64BIT
CASE- CORSAIR OBSIDIAN 650D
Opt Drv- ASUS...
I can post a DxDiag if needed too!

Re: MSI Z97 U3 Plus PCI express 3.0 issues with evga gtx 770

if you disable gen3 in bios setup, does the it works fine when its installed in the pci-e 3.0 port?

It says V10.3, 3/28/2013. I'll have to flash and get back to you afterwards. System ran about 2 hours at idle, I looked at it, rebooted it to get into BIOS, rebooted again to get the revision confirmed on POST, and then I shut it down. After the fan...

MSI 290x lightning crossfire

Hey guys I currently have 1 MSI 290x Lightning. A friend of mine just sold me his ASUS Rog Swift 27" 2560x1440 144hz monitor so I want to purchase another 290x lightning, will my EVGA Supernova 1000 G2 PSU be enough??

Quote from: flobelix on 04-January-15, 01:51:31
First of all please don't open multiple topics on the same issue. The one in Gaming (as you don't have a Gaming series vga) has been removed.
A system with a single reference design R9-290X requires 33A and a 600W psu. For a Lightning make it 40A and a 600W. Any further Lightning will add 20A more. This makes minimum requirements of around 60A and a 750W psu. Your EVGA psu offers 83A and 1000W and should therefor be way enough.
Understood

MSI 290x Lightning throttling (Power limit issue?) HELP ME OUT MSI

Ok so ive recently got a 290x Lightning and put a block on it to do some benchmarking. And it appears to be throttling when going beyond +300mV... I make sure to max power limit every time, i have uninstalled CCC incase there are any conflcits, i have tried the original bios, i have tried 13.12 WHQL and the latest WHQL, i have tried with and without powerplay, with and without unofficial overclocking , with and without forcing constant voltage. And i honestly dont know what to do anymore.
This was done with UOC and powerplay disabled so clocks are static, until they throttle apparently. If i stay under +300mV its working just fine and my graphics score on 3dmark Firestrike make sense, the FPS does aswell.
It does this in everything not only in Firestrike.
I used this at the end of MSIAB target to get +400mV. "/wi6,32,8d,40".
I hope you've got some answers MSI!

Quote from: Rangerjr1 on 28-April-14, 19:16:17
There's bound to be a MSI Rep or something on here though.
No. This is a Users-to-Users Forum: >>How to contact MSI.<<

Msi GTX 770 lightning compatability with an msi 990xa-gd55

Soon I will be upgrading my pcand cant be sure from my research that the msi GTX 770 lightning is compatible with the msi 990xa-gd55 motherboard. So I thought I'd ask for a proffesional opinion. Thanks

You're welcome!

MSI P35 boards question about PCIe 1.0a/1.1 vs PCIe 2.0 compatibility

As release date of AMD.ATI new videocards with PCI Express 2.0 (2950 serie) gets near then these questions and answers may become important...
...this is related to actual mainboard lineup (P35 Diamond, P35 Neo, P35 Neo Combo, P35 Neo2, P35 Neo2-FR/FIR, P35 Platinum, P35 Platinum Combo,P35D3 Platinum)
Q: What PCI-express version is on MSI P35 mainboards?
* Website says 1.0a, in manual there is no PCIe build version at all, FAQ nothing and by specification P35 is supposed to hold 1.1 http://download.intel.com/products/chipsets/P35/317304.pdf
A: ?
Q: Are upcoming PCI-express 2.0 cards compatible with MSI P35 mainboards?
A: ?

Quote from: Dwarden
What PCI-express version is on MSI P35 mainboards?
PCIe 1.1
Quote from: Dwarden
Are upcoming PCI-express 2.0 cards compatible with MSI P35 mainboards?
Officially, P35 & ICH9(R) does NOT support PCIe 2.0
But the P35 chipset actually supports the PCI-Express 2.0 specifications ...
Anyway, to be out of troubles, you should consider an upgrade to X38.

[Request] Newest bios/ln2 bios for r9 290x lightning 4g

As tittle says im looking for regular bios and ln2 bios for r9 290x
Also got a questions about it.
Is 290x lightning uefi compatible and what exactly are meanings of GOP and rest of stuff type bioses.
GPU-z shows this:
and when i hover my mouse over it says its working in PCI-Express x1 v1.1 mode yet it also says it supports x16 v3.0.
Thx ahead.
S/N: 602-V307-010B1405xxxxxx - don't know if i have to put whole serial or is this enough?
//speedy.sh/hTRNt/Hawaii.rom - saved under LN2 mode
//speedy.sh/GQZEM/Hawaii.rom - saved under normal mode
-just add http: to link for rom (it doesn't allow me to put whole link...)

You are already using the latest vbios versions (TV307MH.101 normal vbios and TV307MH.111 LN2). Both vbios versions are UEFI GOP versions ready for UEFI Fastboot being GOP compliant (Graphics Output Protocol).
As for the PCI-E reading this is due to power saving mode limiting the PCI-E transfer rate. If you use GPU-Z click on the question mark next to the bus interface reading and it will start a render test and make the PCI-E slot work in load mode.

MSI R9 290X 4GD5 BF4 Radeon R9 290X Troubles all around.

Hi, hope you like to read but I'm having Issues everywhere with every aspect of the $579 first time AMD card purchase.
My build I've been slowly piecing together...
i5 4760k
MSI R9 290X 4GD5 BF4 Radeon R9 290X from newegg before christmas, now discontinued I see :(
New Corsair TX750 PSU
New Biostar HiFi z87x MOBO (i eventually flashed the BIOS to try to get the gpu to work)
Win7 64bit SP1 on 128 SSD
~5 TB of additional storage on other drives
Day 1, unbox, install as instructions state, hook up power to the AMD/MSI GPU. 8,6pin PCIE on the working Corsair tx-750 PSU. (i have a PSU tester, it was working prior with another card)
Power up, fan on the GPU spins, tried to load driver from DVD that came with box, no drivers found.... At all, browse DVD/CD was the only option when I clicked "install drivers". This needs to be done from what I've read to get the OS to detect the card (even though in BIOS it doesn't detect anything either)
FINALLY GET DRIVERS TO DOWNLOAD FROM MIS LAST WEEK AFTER 24 HOURS OF INCOMPLETE< CORRUPT DOWNLOADS......FUN!
I chose to install custom, and express both, either way the installer fails after detecting system, and tries to detect hardware.
I tried to re-set the card, and used different PCIE power since I have spares with the PSU, still the GPU fan spins, but will not be detected. Driver Installer has failed in the same spot, all 30 times I've written down I've tested it, possibly more. "install package failure"is the error i get, goto the HTML error log, and it's not much help.
I flashed the motherboard, still no detection in BIOS either of the card even being there.
I currently had Intel HD4000 video support only installed, I was using my older MSI 550ti until I got the card from newegg, and uninstalled the drivers before I started the process.
SO, ONTO THE NEXT FRUSTRATION...
I sent in a request for technical support, and got an email back promptly- Thanks! , except the link doesn't work, at all, on 3 different machines, different ISP's you name it, google cant find the page.
Fine, Ill try an RMA, BZZZZZ wrong answer, can't get to that page either.....
The basic troubleshooting "FAQ" that was sent to me in an email is all relating to Motherboards too, 0 information on GPUs.
Very frustrating... I think I just made my first and last AMD card purchase, now to get one that at least works and see if it changes my mind. Anyone here fro technical support, since I can't find links that work? I just want an RMA at this point, unless there is something, short of re-installing OS, OFFICE and all the other fun stuff I spent hours doing.
-Any- help at this point would be greatly appreciated!!!!

Normally technical support is quite good. If you are located in the US there seems to be a website issue indeed as neither rma nor the technical support sites are working when I just tried (>>How to contact MSI.<<).
Either you wait for the rma system to work or you try it via the reseller (which can be faster with some sellers).
As your card doesn't work at all, you have a current Z87 board with updated bios, a sufficient psu and a different vga works it really looks at least like the new card is dead on arrival.

290x lightning bios for fan control?

Hi, would an updated bios fix my 290x Lightning not having manual fan control?
Serial Number: 602-v307-04sb1403020690
Here's a link to the bios:
https : //drive . google . com/file/d/0B0bFt35qm1QVeWNhMW55Nmk2Tk0/edit?usp=sharing
The forum wouldn't let me post a link, so it has six extra spaces. Apologies.
Two side questions:
1) Afterburner (even after a reset) says +63 on voltage. Is that a display error and though it says +63 it's actually at +0 extra, or is it actually just defaulting to +63 right off the bat? So, for example, if I set it to +100 would that actually be giving it +100 or just +37?
2) With Afterburner no longer being updated for new features, is there an alternative program that is continuing development?
Thanks!

For the vios:
Use the attached UEFI vbios versions to fix the fan issue.
TV307MH.101 is normal vbios, TV307MH.111 is LN2
Create a bootable usb stick (https://forum-en.msi.com/index.php?topic=165175.0).
Then unpack the previously provided archive (307_04s.rar) and put the included file (TV307MH.101 or TV307MH.111) on that stick.
Rename TV307MH.101 / TV307MH.111 to 101.rom / 111.rom. Put the atiflash.exe also included in the archive on the USB stick too. Now boot from the stick.
Type atiflash -p -f -noaper 0 101.rom (or 111.rom) [ENTER] and let it flash the vbios.
Quote from: BarkingHorse on 13-June-14, 01:00:54
1) Afterburner (even after a reset) says +63 on voltage. Is that a display error and though it says +63 it's actually at +0 extra, or is it actually just defaulting to +63 right off the bat? So, for example, if I set it to +100 would that actually be giving it +100 or just +37?
It is +63 by deafult (without changing values)? With Normal or LN2 vbios or both? Did anything change with new versions above?
Quote from: BarkingHorse on 13-June-14, 01:00:54
2) With Afterburner no longer being updated for new features, is there an alternative program that is continuing development?
I'm not aware of what you are talking as Afterburner is under development all the time. The latest version 3.0.0 final has just been released. >>How to use MSI Afterburner<<

Tri-Fire 290X Lightning PSU power

Hi Guys,
I'm new to this Forum over here at MSI, and I'm wondering if any1 could help me with my need
I need to know how much power three 290X Lightnings would consume and what monster of a PSU I'm gonna need for it,...
I already ordered the third GPU with another waterbock.
The deal is this, when I'm benching my system power draw is 1070W (measured @ wall), so there is absolute NO headroom for a third GPU with this PSU -.-
Now i need to know how much power a third OC'd lightning would need, because I don't want to buy a 1500W PSU if a 1350W would also be fine,... (Quad-fire will never happen )
Has anyone experience with three Lightnings and their power consumption?
My current setup:
i7- 3930K @ 4,5Ghz @ 1,29V
2x 8 GB Corsair Dominator Plats 1866 @ 2000 MHz
2x 290X Lightning CF @ 1150/1650 -24/7 stable
ASUS Rampage IV Extreme
3xSSD
1xHDD
Corsiar HX1050 PSU
Cooling:
1x Aquacompuer aquaduct 360XT with 3x120mm fans @1200RPM
1x MO-RA 1280 Rad with 9x140mm fans @800 RPM
1x EKWB CPU Block
2x EKWB Lightning Block
1x EKWB 3-Way GPU Bridge
Many thanks in advance
e4gle

A system with a single reference design R9-290X requires 33A and a 600W psu. For a Lightning make it 40A and a 600W. Any further Lightning will add 20A more. A psu for triple Crossfire with 290X Lightnings should therefor offer 80A and 1000W minimum. The Corsiar HX1050 is therefor on the edge of it's possibilities but should work if no excessive oc is planned.

MSI R9 290X Lightning & PCIe 2.0 Compatibility issues?

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