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post #171 of 175
Quote:
Originally Posted by EniGma1987 View Post

That is so much backwards thinking. Why would a cache that is slower and smaller than the main memory pool ever be a good thing? Why would moving the main pool memory controller off-die ever be good? We already saw the big improvements moving it on die has had for AMD and Intel CPUs. And why would having to manage a chip on an interposer along with doing a whole other set of memory and traces be a good thing? It would make things even more complicated and prone to failure in production and thus drastically raise costs for nothing but decreases in performance.

because HBM's advantage isn't simply just raw bandwidth, but access latency improvements?
furthermore i'm just relating it to what HBM would be when used like intel's eDRAM.


on a side note, bandwidth can be managed by increasing buswidth (e.g. 3072bit @ 384GB/s vs 2048bit @ 256GB/s) or increasing clock speed.
HBM2 gives us a perfect example of this, even a simple 2048bit HBM2 4GB configuration gives us 512GB/s of bandwidth.

and off-die IMC can work when theres a valid buffer in between, this is why caches exists well before on-die IMC was implemented.
Edited by epic1337 - 9/28/16 at 6:32pm
post #172 of 175
slow cache's....
post #173 of 175
Quote:
Originally Posted by Clocknut View Post

for 1080p 4-6GB should be well more than enough for long time until the GPU itself is too slow.

Did you read the article? We already have games (call of duty) that require 7.5GB of VRAM @1080p!

https://translate.googleusercontent.com/translate_c?depth=1&nv=1&rurl=translate.google.com&sl=auto&tl=en&u=https://www.computerbase.de/2016-09/grafikkarten-speicher-vram-test/&usg=ALkJrhjSPMUR7hag7thramI1Yf93dvv--A#abschnitt_testmethoden_und_das_testsystem
Koneko
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Koneko
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post #174 of 175
Quote:
Originally Posted by Phoenixlight View Post

Did you read the article? We already have games (call of duty) that require 7.5GB of VRAM @1080p!
Allocated != necessary
    
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post #175 of 175

It doesn't actually need that much VRAM, it's just caching it.
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