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3dmark has little to nothing to do with preformance in real world.
look at turbos fraps thread. the 8700s are crappy in highres cuz of restricted bus 128 bit. not to mention the 256x2 paralell ram |
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3DMark06 is an excellent predictor of our a system will perform AGAINST other systems. It doesn't tell you what absolute performance on specific games will be and mainly the drivers are the culprits here...not the chip.
I often read that the Dell 8700M SLI only uses 512KB RAM (2x256MB). This is wrong. Dell configured the SLI module so it fully uses the additional 768MB of shared memory from Vista. So from 2GB RAM onwards the GPU's can use well over 1GB of RAM. The low added value of 2x512MB in actual performance was the reason that Dell opted for the 2x256MB option (also because of increased price, energy consumption and thermal development of the 2x512MB option). Above 2GB or main DDRAM, the 2x512MB is just not worth it as it would bring the total to over 1,7GB and games are not optimzed to use that much. My system has 4GB DDRAM, so my GPUs is never short of RAM. |
3dmark06 sucks for anything other than seeing if your system is performing up to par by comparing it to a very similar system.
The 8700s in SLI only have 256mb of GPU memory available to them. Memory is mirrored in SLI, not striped. When this gets filled, your right, it reverts to system memory, but the system memory is way, way, way, way, way, way, etc...slower than GPU memory, and is more or less worthless for gaming.
There is hardly, if any extra 'thermal developement' for adding ram, but i think you made most of that part up anyway.
My system has 4GB DDRAM, so my GPUs is never short of RAM.
I almost want to sig quote you on that one.







