Poor PXI IO performance on Latitude E6410 with ExpressCard 8360

Hello,
I have a Dell Latitude E6410 with a Core-i5 M520 which is giving me very poor io performance when using an ExpressCard 8360 card to connect to a PXI Rack.
The sustained IO rate that I can get appears to be about 1/3 of that that I can get using the same ExpressCard on a Dell Latitude E6400 (with a Core2Duo processor).
I am using the A05 bios (latest at time of writing) on the E6410.
Wade.

I am running Windows XP (32 bit) sp3 in both cases.
The E6410 has 4GByte of memory fitted.
The E6400 has 2GByte of memory fitted.
I have also use the same ExpressCard 8360 via a PXIe to ExpressCard Adaptor in a Desktop machine with similar performance figures to the E6400 - i.e. much better than the E6410.
The Desktop Machine is an HP Compaq D7900 with 4GByte of memory, Core2Duo E8500 also running Windows XP sp3 (32 bit).
Also, on the Desktop, I am running NI PXI Platform Services 2.3.2 and NI-Visa runtime version 4.3.
On the E6410, I am running NI PXI Platform Services 2.5.2 and NI-Visa runtime version 4.6.
I no longer have access to the E6400 so I am not sure what sofware versions were installed. However, they are unlikely to be new than the versions installed on the E6410.
Wade.

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Did someone help you?
Say thanks! with a kudo.
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Poor PXI IO performanc​e on Latitude E6410 with ExpressCar​d 8360

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