Neoseeker : News : AMD 4X4 - what is it really, and how does it work?
Sort by date: ascending descending
0 thumbs!
^
tomk Jun 2, 06
The "4X4" name comes from "4 cores" X "4 GPUs". They're pushing this as a partner to Quad SLI.

And about total memory bandwidth, if AMD managed to get 100% efficiency out of DDR2 (haha), then two CPUs with DDR2-800 would have a maximum bandwidth of 23.8 GB/s -- but since we're not seeing anywhere close to 100% in the lab, I'd say no more than 15 GB/s would be achievable in the real world with their current tech.
0 thumbs!
^
bhenning Jun 2, 06
Hi,

"4 cores" X "4 GPU" ... that also makes sense;l at least until the four core processors are released.

As for memory bandwidth, assuming that memory was 100% efficient, ignoring latencies... 6.4GB/sec * 4 = 25.6GB/s, however you are right in that due to overhead it will never be reached.

I'd expect up to 18GB/sec would be doable with this setup.
Sort by date: ascending descending
- This news story is archived and is closed to new comments now -
Newsletter
Latest News
Latest Inhouse
Cooler Master Seidon 120XL Liquid Cooler Review NZXT Phantom 240 Case Review Thermaltake Urban T81 Full Tower Case Review Thermaltake Commander G41 Mid Tower Case Review NZXT Sentry 3 Fan Controller Review Noctua NH-D15 CPU Cooler Review
(0.4933/d/web6)