MSI 7870 HAWK limited Voltage ?

Iam going to buy MSI Radeon 7870 Hawk so i want to know: the unlocked bios of Hawk can be adjust voltage higher than 1.3V in MSI afterburner, thank you so much

My multimeter says idle 1.380 and under load 1.330 (MSI Kombustor OpenGL2)

Similar Messages

MSI 7870 hawk 1 ghz edition PC freezing problem

Issues first started when i updated amd drivers from omega to 15.5 beta for witcher 3. Youtube videos would cause driver to crash and it would recover. It would do that daily several times. It was going like that until today. PC will just freeze now. I swapped GPUs and now at the time of writting im using 5870 and there are no problems. videos are playing normally no freezing or driver crashing. Also only videos would cause drivers to crash and when i was gaming there was absolutely no problem at all. Now (with msi hawk) if i just stick on desktop or go on a website PC would just freeze. If i get into game (for example WoW) i would get choppy fps and it would keep going like that until i exit the game, once i exit the game after about a minute PC will lock itself up. I monitor my temperatures all the time. I noticed that in msi afterburner it says gpu "0 degrees" and it shows that load is 0% when it goes nuts but it will keep rendering the game until i close the game and then PC will just freeze.
I don't know what to do. Could it be that my MSI hawk is dead? :/ It is only 1 year old from the day i got it from the shop. Is there anything to be done to fix this problem? I just hope it's fixable.
PC config:
Main Board - gigabyte X48 ds4
Video Card - MSI 7870 hawk 1ghz edition
PSU: seasonic m12II 750w
CPU: Q8400
Memory: kingtson hyperx 8 gig
SSD/ HDD: kingston hyperx 3k 120gb / WD black caviar 1 TB
OC: Yes only CPU stable 24/7
Operating System: W8.1

Quote from: darkhawk on Today at 06:59:52
What were the temps when it was just sitting there? Or playing a game?
Did you try going back to the older omega drivers to see if that rectified the problem at all?
Sitting temps were going between 35-40 (it's quite hot in the room) and when i turn on the game it goes to about 50 degrees and hangs there (wow isnt really graphically intensive and doesnt cook gpu like at all). Yeah i reverted back to omega drivers to see if beta drivers were making this problem but no. Problem still exists. Drivers are still omega drivers since reverting and with 5870 works fine. :/

Msi 7870 hawk temps issue

hi guyzzz plzz help me out to sort this problem
i have msi 7870 hawk edition ...the problem is that when i play games temperature goes upto 103c at load and normal temps are 32c...i don,t understand what to do...i have installed latest drivers...

I am now having the same issue with my 7870 hawk. I've done a search and it seems this happens to quite a few owners of this card. owning this card was terrible the first month, but i chose to stick it out and the past two months have been a nightmare. first multiple and unfixable driver crashes all the time whether at load, idle, desktop, browsing etc. and now the temps are 22c higher than normal in every game. this car has never gone above 61c in heaven benchmark or any game, yet now it's hitting 80c in GW2, 78-90c in BF3 and the fan is stupid loud. I am not going to try and remove the heatsink. MSI have already told me that since my motherboard has a broken hook on the pci-e slot they might not rma that so I won't take any chances. any idea if I can get a different card of comparable value as a replacement. they stopped making the hawk and TFIII months ago and I will not be taking the current MSI 7870 that's out.
edit: I decided to change the thermal paste. I used some of my ic diamond 7 and temps in GW2 are now in the 48c-61c range. in other words, normal. the stuff that came with the card must be truly terrible.

MSI 7870 HAWK voltage problems

my gpu voltage doesnt seem to be setting properly
afterburner says one thing everything else says diffrent does anybody know whats going on ?
system spec:
i5-2500k
8GB Ram
Gigabyte GA-Z68X-UD4-B3
750 OCZ PSU
256 M4 SSD
Thanks.

GPU-Z and such just read target voltages but not accurat voltages. Since the Hawk is a MSI own design the voltage readings of Afterburner should be the most accurate of these tools. None the less the safest way to readout a current overvoltage is using a multimeter.

UEFI GOP BIOS for MSI 7870 Hawk 2G

Hi,
I would be very gradeful for helping me with a UEFI GOP firmware update for my card.
Serial Number : 602-V281-08SC1308059119-S46
Original VBIOS : **https://www.dropbox.com/s/b9jwetr5wpq0lh9/old.rom**
Thanks

UVD-power summary of MSI 5770 Hawk, 5570, & 785GTM-E45; Hawk min voltage

MSI R5770 Hawk
MSI R5570-MD1G
MSI 785GTM-E45
GPU PWR SYS f_GPU f_VRAM V_GPU set V_GPU meas Note 1: freq & voltage Note 2: system state
DCW Mhz Mhz V V
785 35 197 400 idle stock idle, light (5 min max)
785 46 498 400 UVD stock 1x 720p sharpen complex 2
5570 43 157 200 0.9 idle stock idle, light (5 min max)
5570 54 400 800 1 UVD stock 1x 720p sharpen complex 2
5570 52 400 800 0.9 0.8987 UVD undervolt/underclock 1 1x 720p sharpen complex 2
5570 55 400 800 0.9 0.9001 UVD undervolt/underclock 1 1x 1080p sharpen complex 2
5770 53 157 300 0.95 0.956 idle stock idle, light (5 min max)
5770 58 157 600 0.95 0.957 idle 2x f_VRAM idle, light (5 min max)
5770 65 157 1200 0.95 0.957 idle 4x f_VRAM (nom. max) idle, light (5 min max)
5770 61 400 900 0.95 0.958 idle @ UVD stock idle, light (5 min max)
5770 72 400 900 0.95 0.9499 UVD stock 1x 720p sharpen complex 2
5770 75 400 900 0.95 0.9508 UVD stock 1x 1080p sharpen complex 2
5770 60 157 300 0.95 0.9498 UVD undervolt/underclock 1 1x 720p sharpen complex 2
5770 63 157 300 0.95 0.9503 UVD undervolt/underclock 1 1x 1080p sharpen complex 2
5770 61 157 200 0.95 0.9497 UVD undervolt/underclock 2 1x 720p sharpen complex 2
5770 61 157 200 0.95 0.9497 UVD undervolt/underclock 2 1x 1080p sharpen complex 2
AMD Power Play states are glitchy, and not all videos detect and run with DirectX Video Acceleration. So max power during playback can end up on the highest power state which is not shown above.
MSI R5770 Hawk minimum power
The uP6204 power controller used on the MSI R5770 Hawk design nominally supports 0.5625 to 1.3500V in 0.0125V steps.
With a stock video BIOS, MSI Afterburner 1.50/1.51 allows the MSI R5770 Hawk to be soft-modded from 1.000 to 1.350V in the roughly 0.0125V steps.
The video BIOS can be set as low as 0.950V but with no steps between 0.950 and 1.000V.
MSI Afterburner 1.60 beta 4 or earlier adds the AllowCaptureVoltageDefaults profile setting. Acquiring, then changing the default GPU voltage allows "resetting" the Hawk to 0.950V in Afterburner for the highest frequency state. This allows maintaining Power Play transitions and running the max frequency at 0.950V, where Afterburner by itself is limited to 1.000V.
The max frequency state of the Hawk is 875 MHz 1200 MHz 1.200V. To have the most flexibilty on control the Hawk, lowest power in the Desktop/HTPC/light gaming, and the ability to manually overvolt/overclock for specific games: run the Hawk at 0.950V in the max frequency state.
How-to work around Afterburner and the Hawk design to run 1.000V in the max frequency state. *
1) in the video BIOS, leave the voltage as 1.200V in the BIOS--which is required for Afterburner to change the Hawk voltages in Windows
2) in the video BIOS, change the GPU frequency of that state to something less than or equal to the maximum stable frequency at 1.000V
3) in Afterburner, Reset to default settings **
4) in Afterburner, change "Core Voltage" to 1.000V
5) in Afterburner, Apply
6) in Afterburner, Save to Profile 1
7) in Afterburner, \Settings\Profiles\2D Profile\ & "3D Profile" choose "Profile 1" ***
8) on each Windows startup, run Afterburner
How-to work around Afterburner and the Hawk design to run 0.950V in the max frequency state.*
1) in the video BIOS, leave the voltage as 1.200V in the BIOS--which is required for Afterburner to change the Hawk voltages in Windows
2) in the video BIOS, change the GPU frequency of that state to something less than or equal to the maximum stable frequency at 0.950V
3) in Afterburner, confirm the voltage default setting for 0.950V--capture voltage defaults as needed using AllowCaptureVoltageDefaults mentioned above
4) in notepad as an Administrator (Win 6.x), change the Hawk's profile configuration file to 0.950V
example:
[Settings]
uP6204_Defaults=D7 20
5) in Afterburner, Reset to default settings **
6) in Afterburner, change "Core Voltage" to 1.000V--changing the profile setting to 0950/950 is not useful as of 1.60 beta 4.
7) in Afterburner, Apply
8) in Afterburner, Save to Profile 1
9) in Afterburner, \Settings\Profiles\2D Profile\ & "3D Profile" choose "Profile 1" ***
10) on each Windows startup, run Afterburner
11) in Afterburner, "Reset" to re-enable 0.950V.
* UnlockVoltageControl in the primary Afterburner profile's [Settings] will likely be needed.
** Only default profiles support Power Play states correctly.
*** Having a non-"default" profile in 3D results in the "3D Profile" activating instead of the UVD in the BIOS.
MSI Afterburner, default voltages
Profile Idle V_GPU @ V_CORE (V)
D7 12 1.125
D7 14 1.100
D7 16 1.047
D7 18 1.049
D7 19 1.037
D7 20 0.949
D7 21 0.937
D7 22 0.925
D7 23 0.912
D7 24 0.899
Power Play states in RBE 1.25
0 Boot 00 -> 00 -> 00
1 Power saving 01 -> 02 -> 00
2 UVD 03 -> 03 -> 03
3 Power saving 04 -> 02 -> 00
4 ACPI 01 -> 01 -> 01
Stock clocks & V_GPU
Clock info 00 01 02 03 04
f_GPU 875 157 600 400 400
f_RAM 1200 300 1200 900 1200
V_GPU 1.20 0.95 1.00 0.95 0.95
My current and likely final settings for MSI R5770 Hawk:
MOD clocks & V_GPU
Clock info 00 01 02 03 04
f_GPU 714 157 600 157 400
f_RAM 1200 300 600 300 600
V_GPU 1.20 0.95 0.95 0.95 0.95
Afterburner Profiles
# CoreVoltage CoreClk MemClk
1 0950 714000 1200000
2 1000 785000 1200000
3 1125 902000 1200000
5 1200 951000 1200000
More data & full system config:
http://forums.techpowerup.com/showpost.php?p=1858205&postcount=1

MSI 990FXA-GD80 / MSI Radeon ATI HD 7870 Hawk / Phanteks combo.

Hi
I am in the process of building a new system but have, potentially, run into some problems.
The motherboard I am looking to buy is the “MSI 990FXA-GD80” and the graphics card is the “MSI Radeon ATI HD 7870 Hawk”, processor FX-8350.
Now to my question/possible problem.
I am looking to buy a third party cooler from Phanteks, the “Phanteks PH-TC14P-RD”.
I know that it will be a tight fit between the cooler and the graphics card normally, and since the Hawk has the “GPU reactor” (which builds the height of the card) my concern is that it would interfer with the Phanteks making it impossible for me to install the video card using the Phanteks.
I was wondering if this combo would work or not, prior to registering here I Googled searched like crazy but came up with nothing.
I would really appreciate some help.
Best regards.
Eric

Since that board has two PCI-E slots with 16 lanes you wouldn't have to use the first slot so reactor is not the real issue. The VRM cooler of the board could be more troublesome as the cooler has two towers and two fans.
However I found somone listing a combo with the cooler and a 990FXA-GD65 which should have a vrm cooler of the same height.
http://hardware.forumsee.com/a/m/s/p12-31595-036007--first-overclock-questions-and-concerns.html
http://www.msi.com/product/mb/990FXA-GD65.html

Msi n460gtx hawk voltages???

hello! i need some help with my msi n460gtx hawk. i overclocked this vga and for unknown reasons my voltages to the core/memory/aux stays the same as before at the default clocks(780/1560/1800). now i'm running at 900/1800/2100 mhz,everything stable(msi kombustor burn-in and a lot of games) and those voltage values: +70mv core/+50mv memory/+20mv auxiliar. idle voltage is 0,875v and load is 1,012v same at default clocks and the overclocking. i guess it must show me some increase in voltage,since i pushed forward those values in afterburner,but...everything looks unchanged! i saw others users having some increase in core voltage,when they overclock and tweaking voltages,but is not my case! i don't know what is happening. really,at the voltages i applied it should stay at 0,890-0.900v idle and 1,050v or above in loading... but my hawk looks like i never touched the voltage sliders! i checked those values with gpu-z and aida 64 extreme edition and both show me the same results. i don't have stability issues for the moment,but i guess it will comes some day if my vga don't work with some extra power applied at those frequencys... i have msi afterburner 2.1 installed. i just tried with afterburner 2.0 and the results are the same... i tried 1.6 and i cannot unlock voltage with it... i use an amd phenom II X4 955 clocked at 3,6ghz,mobo gigabyte 890fxa-ud5 and 4 gb ram ddr3 1333mhz dual ch. please someone tell me if is something wrong with my card or i missed something when i overclocked it? thank you very much for your advices!

Quote from: by Unwinder developer of Afterburner to a similar Question in Afterburner support forum
That's supposed to be that way, you WILL NOT be able to monitor voltage changes with any software tool reading voltages via NVIDIA driver.
Hawk uses additional voltage controller chip which is adding programmable voltage offset to output voltage of reference NVIDIA voltage control circuit.
None of tools you've mentioned support that additional chip and just show you expected target voltage (which doesn't match real value in case of adding an offset via that additional chip).
Furthermore, that additional chip itself also doesn't support voltage readings, it doesn't even know which voltage is on its' input, it is rather simple IC which just trying to modify the input value by specified offset.
That is why there is no (and there will not be in future, I've seen rumors that I'm working on getting voltage monitoring working on Hawks and I say that's not true) voltage monitoring for Hawks when alternate voltage controller circuit is in use.
The best thing that can be done to see some form of expected voltage is approximating the output by displaying summ of NVIDIA reference voltage with additional offset, but that's by far not the best solution because both components (reference circuit and additional offset circuit) add its own inaccuracy.
original here -> http://forums.guru3d.com/showpost.php?p=3749461&postcount=78
Could try a Multimeter.

MSI GTX560ti Hawk low 3dmark11 score

I recently purchased MSI GTX560ti Hawk. I ran 3dmark11 on it and on performance mode, I only got P1650 score. The graphics score is very low and the FPS averaged around 6-7.
Here is my specs:
Asus P5Q motherboard
Gigabyte Odin GT 550w PSU
Intel Q9550 oc@ 3.67GHz
Kingston DDR2 2x2GB @ 800MHz
Intel X25-M 160GB SSD
MSI GTX560ti Hawk
I know the package box suggested using a minimum 600W PSU but I managed to boot into windows and play games with my 550W. I can run Assassin Creed Brotherhood and Shogun 2 on very high graphic setting.
Could the very low 3dmark11 graphics score due to the low PSU power supply? Please help
Thanks!

Quote from: Kuane on 21-May-11, 01:48:18
I just bumped the core voltage up block by block from +0 to +150 on Afterburner 2.2.0 beta 3.
I tested Heaven DX11 benchmark on all of those voltages and there were artifacts in all of them (running VGA default clocks). But there were less artifacts as the core voltage went up.
Is my PSU not supplying enough power?
Quote
Is my PSU not supplying enough power?
could be , but basically should be more than enough if the stats can be trusted.
Test the VGA in another machine[who has a better PSU, with strong single rail] then see how its goes there
Quote
I just bumped the core voltage up block by block from +0 to +150 on Afterburner 2.2.0 beta 3.
I tested Heaven DX11 benchmark on all of those voltages and there were artifacts in all of them (running VGA default clocks). But there were less artifacts as the core voltage went up.
try next voltage step and retest

MSI N460GTX Hawk (1GB) Overclocking Results

I've had very good results with overclocking my N460GTX Hawk video card.
For the past 6 months I've been documenting my overclocking results and had success with using additional cooling solutions to decrease the PCB and VRM temperatures.
Check out MSI N460GTX Hawk (1GB) Overclocking and Cooling Results:
http://forums.tweaktown.com/video-cards/42319-msi-n460gtx-hawk-1gb-overclocking-results.html
As of today (July 4th) the thread has only 93 posts.
My new N460GTX Hawk Talon Attack card is arriving in a few days and I plan to use my N650SLI-DS4 motherboard with an overclocked SLI setup. I'm curious to see how well SLI performance scales with an "ancient" motherboard.

Quote from: by Unwinder developer of Afterburner to a similar Question in Afterburner support forum
That's supposed to be that way, you WILL NOT be able to monitor voltage changes with any software tool reading voltages via NVIDIA driver.
Hawk uses additional voltage controller chip which is adding programmable voltage offset to output voltage of reference NVIDIA voltage control circuit.
None of tools you've mentioned support that additional chip and just show you expected target voltage (which doesn't match real value in case of adding an offset via that additional chip).
Furthermore, that additional chip itself also doesn't support voltage readings, it doesn't even know which voltage is on its' input, it is rather simple IC which just trying to modify the input value by specified offset.
That is why there is no (and there will not be in future, I've seen rumors that I'm working on getting voltage monitoring working on Hawks and I say that's not true) voltage monitoring for Hawks when alternate voltage controller circuit is in use.
The best thing that can be done to see some form of expected voltage is approximating the output by displaying summ of NVIDIA reference voltage with additional offset, but that's by far not the best solution because both components (reference circuit and additional offset circuit) add its own inaccuracy.
original here -> http://forums.guru3d.com/showpost.php?p=3749461&postcount=78
Could try a Multimeter.

MSI K7T Turbo Limited Ed. + XP1700+

Hi
I would like to know if my mainboard (MSI K7T Turbo Limited Edition on KT133A) supports XP1700+ 0,13 processor?
I've already read on this site that it doesn't :( but from the other hand I've heard that some people have those Xp1700+ on the same boards and everythings works fine (with bios ver. 3.6).
So...will it work or not? XP1700+ 0,18 works perfect.
Regards

Hi, it may work but there is no official support for it.
http://www.msi.com.tw/program/support/cpu_support/cpu/spt_cpu_detail.php?UID=25&NAME=MS-6330%20Ver3.0

Questions about my MSI R5770 Hawk Radeon HD 5770 and my Dell Studio 7100

Ok, I have had this card installed for about a year now. From the beginning Catalyst Control Center had given me error messages, "Catalyst Control Centre: Host application has stopped working. Windows is checking for solutions" every time I start the machine or every time I try to use the Catalyst Control Center. This has not been a problem because I have been using a 2 monitor system using the DVI port from on and the HDMI to Display Port adapter to the second larger monitor (if I went straight HDMI I can't change the settings and I end up with a 1 inch black border around the desktop and the outer edge of the 23" monitor,) so I just worked around with the HDMI to DVI. Well now I am trying to hook up three monitors. One to the Display port through a Displayport to DVI, one to the HDMI through the HDMI to DVI and one to the Display port. No matter what I try to do through the Windows display control panel, I can not get the displayport monitor (which ever is hook to that port) to display. Windows 7 does detect all three monitors, but it will not allow me to "extend the desktop" to the third monitor and I still can't get the Catalyst Control Center to work.
I have uninstalled all files from ATI or AMD that involve the video and reinstalled the latest drivers and software, but the Catalyst Control center still is not running.
If you could help me with this it would be great. I am a graphics designer and web designer/developer and not a hardware or software tech and I have been googling and trying different possible answers since yesterday morning.
My graphics card is
MSI R5770 Hawk Radeon HD 5770
My computer is
Dell Studio XPS 7100, AMD Athlon IIX4 630 Processor 2.80 GHz
8 gb
64-bit operating system
I am attempting to hook up a LG W2361 to the HDMI through HDMI to DVI adapter (presently working) at 1920 x 1080
an LG W1952 (at 1440 x 900) through the DVI port to DVI (presently working) and
an old Samsung SyncMaster 170t to the Displayport through a the adapter (not working) monitor is detected but it will not allow the extend desktop to be applied.
Hope someone can help, thanks in advance for just reading all of this.

Just incase anyone runs into a similar problem. I figured it out.
Somehow in one of either the ATI driver updates or in a Microsoft update, my drivers and software was contaminated. I deleted all software and drivers for the card, which I had already tried several times. But this time I went into safe mode used CCcleaner in safe mode and cleared the register of all entries. I then reloaded and the Catalyst Control center and it works fine now.
The problem with the three monitors seems to be that the one hooked to the displayport, if you are using more than 2 monitors, must be hooked to an active displayport adapter. I was using a passive adapter. So either I need to buy a very expensive adapter or.....maybe a new monitor that uses displayport.
Hopefully this will help someone else having this issue.

Installed MSI R5770 Hawk but PC says: HD 3200

Hello to all. I just purchased and installed A MSI R5770 HAWK video card. I installed all the software and everything looks good, but after I finnished the install through the ATI Catalyst manager, I clicked on "View log" and it said: Hardware info= ATI Radeon HD 3200 Graphics
Did I do something wrong? I believe that the HD3200 is the on-board graphics(maybe). What should I do to get the most out of this GPU?? I do have monitor hooked up threw the HDMI on the card and I have good pic., I just thought that the Hardware should say: "ATI HD5770 " shouldn't it?
By the way I did search the forms before I posted, just in case you notice that this is my first post. Many Thanks, >>>>RiZ<<<<<

Yes, the HD3200 is integrated and not related to MSI R5770 HAWK
So the 5770 is not detected by the system or?
Have you checked in device manager? Is it listed there?
Check with also with AIDA64 At Display, GPU page:
http://www.aida64.com:8081/aida64extreme150.exe
Read >>Posting Guide<<

Getting audio through HDMI on MSi 5770 Hawk

Hey all,
I just built a new system using the ASUS P6X58D Premium motherboard and I have two MSi r5770 Hawk graphics cards CrossFire'd. I've got my monitor plugged into the DVI port and also an HDMI cable from the HDMI port to my surround sound system (and to TV). I'm not getting any audio out of the HDMI (not surprising). I'm reasonably sure I need a SPDIF cable from the graphics card to the motherboard.
So I think the graphics card came with two of these weird looking SPDIF cables that just have the connector to the graphics card and these two weird socket cables. There are two problems with this: For the two weird socket things, I don't see anyplace on the motherboard for it to go. Second, the cables are literally like two inches long, so there's no way it is going to reach the motherboard even if it were the right cable.
So I guess what I'm wondering is if anyone can tell me what cable I need to go from the SPDIF connector on the P6X58D Premium mobo to the MSI r5770 Hawk graphics card. Or do I have the wrong idea?
Thanks!

Are you describing the MOLEX to 6 pin power adapters and not S/PDIF cable? S/PDIF cable is about 130mm (12 in.) long 2 wire cable and are only supplied from MSI with NVIDIA VGA cards. ATI should have internal S/PDIF and I don't think they need the cable.

GOP / UEFI Vbios requests For MSI N760 HAWK

I'm searching for a UEFI VBIOS for MSI N760 HAWK
The S/N is 602-V300-01SC1308036613-V26
Here is my vBIOS :
ht_tp://www.mediafire.com/download/bxj3ebb270t5bxs/GK104.rom
Please repair the link, I'm not allowed to post external link,thanks
nvflash information:
NVIDIA Firmware Update Utility (Version 5.118)
Adapter: GK1xx (10DE,1187,1462,3000) H:--:NRM B:01,PCI,D:00,F:00
The display may go *BLANK* on and off for up to 10 seconds during access to the EEPROM depending on your display adapter and output device.
Identifying EEPROM...
EEPROM ID (EF,3012) : WBond W25X20A 2.7-3.6V 2048Kx1S, page
Reading adapter firmware image...
Image Size : 62464 bytes
Version : 80.04.BF.00.69
~CRC32 : 83ED16F4
OEM String : NVIDIA
Vendor Name : NVIDIA Corporation
Product Name : GK104 Board - 20040010
Product Revision : Chip Rev
Device Name(s) : GK1xx
Board ID : E115
PCI ID : 10DE-1187
Subsystem ID : 1462-3000
Hierarchy ID : Normal Board
Chip SKU : 225-0
Project : 2004-0010
CDP : N/A
Build Date : 05/24/13
Modification Date : 07/23/13
Sign-On Message : GK104 P2004 SKU 0010 VGA BIOS (HWDIAG)
MSINV300MS.103
SN:602-V300-01SC1308036613-V26

Yes your card has dual BIOS.
Use NV300MH.101
Quote
So how do i use them?
rename it to .rom, then use nvidia flash tool to flash it:
http://www.techpowerup.com/downloads/2258/nvflash-5-142-for-windows/

MSI 7870 HAWK limited Voltage ?

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