FGL V3200 (and possible others) GPU differences

[Adda]

I have finished my obsessive testing on the V3200 equipped mobos I have, and will now explain my findings.

The motherboards I have come with two different V3200 variations.

216YDDAGA23FH
This GPU is found on older boards.
On this GPU the video memory has a higher profile then the never version, but they use THE SAME aluminum shield.
This means that on these older GPU's, the center part on the underside of the shield DOES NOT touch the GPU core it self, there is a gap filled out with thermal compound.
For this reason alone, this older GPU runs very hot.

216YDJAGA23FHG
This GPU is found on later generation boards.
On this GPU the video memory has a lower profile, so the heat shield fits perfectly well, no gaps.
As a result this GPU runs cooler then the older ones.

To get around the problem with poor cooling of the GPU's in T4x machines, I have removed the heat shield from the GPU, cut out a piece of aluminum (copper would be better I guess) of the right thickness to even out the height difference between the GPU and video memory.
To make the cooler fit over the GPU without the shield, I have bent the GPU portion down so that it pushed gently on the GPU.
This is not easy, I used a long narrow pair of pliers, that I 'bit' down over the cooler in the corner between the CPU, GPU and NB, NOT OVER THE HEATPIPE.
I then twisted the pliers, to bend down the GPU pad in a sharp bend.
When satisfied, I twisted and bent the GPU portion of the cooler to make it nice even end level, mounted to cooler to check the fit, of cause it thakes a few tries to get it just right.

I then put cooler paste on the GPU, put on the aluminum piece I had made, put paste on top of it, on the video memory and CPU and then mounted the cooler.

With a PM770@1.148v and 216YDJAGA23FHG@500/300MHz in Max Performance mode (yes quite overclocked) max temps are as follows during extreme loads on GPU + CPU after the system has heated up and stabilized:

CPU 75C
GPU 75C
PCI 48C
BUS 54C

Same mod with the 216YDDAGA23FH GPU still runs hotter, the GPU climbs to 78C before stabilizing, I have not tested this GPU as extensively though, but expect it to run hotter no matter what you do.
Still 78 degrees as 500/300, not so shabby.

Edit: Powered by IBM_ECW

[systemBuilder]

These are T43's I presume? I am answering your email so it disappears from the "open questions" list.

[Adda]

These are T43's I presume? I am answering your email so it disappears from the "open questions" list.

Yes, T43p, the only ThinkPad that comes with V3200 GPU's.