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[AMD] Breakthrough Performance of “Zen” (Head to Head with Broadwell-E!) - Page 44

post #431 of 580
Quote:
Originally Posted by espn View Post

so you think I troll because I can logically explain why zen should be a troll?

Well, you...um... Wait, what??? That made no sense at all. rolleyes.gif
post #432 of 580

Quote:

Originally Posted by espn View Post


so you think I troll because I can logically explain why zen should be a troll?

 

M80, if you think that you've logically explained anything then I'm afraid I bear some bad news..

     
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post #433 of 580
Wait, does "M80" = "Matey"??? That's awesome! wink.gif
post #434 of 580
Quote:
Originally Posted by espn View Post

so you think I troll because I can logically explain why zen should be a troll?
lachen.gif

i don't think it means what you think it means.
post #435 of 580
Quote:
Originally Posted by Majin SSJ Eric View Post

Wait, does "M80" = "Matey"??? That's awesome! wink.gif

 

:D

     
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post #436 of 580
Last couple pages.... Not so Zen. rolleyes.gif
Quote:
AMD’s floating point unit will still use 128-bit registers for AVX and AVX2, but latency on some FP operations has been decreased and there are now four pipes instead of three to feed the FPU. The CPU isn’t capable of executing 256-bit AVX instructions in a single cycle. Whether this will prove a detriment in real-world code is an open question, but AVX/AVX2 haven’t boosted general application performance the way SSE2 once did.

This is where it counts. Or may be where it fails.
post #437 of 580
Quote:
Originally Posted by ShrimpBrime View Post

Last couple pages.... Not so Zen. rolleyes.gif
This is where it counts. Or may be where it fails.

There are trade-offs... I doubt many programs NEED AVX2 for good speed. Zen can do it, but the performance penalty has yet to be tested.
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post #438 of 580
Quote:
Originally Posted by umeng2002 View Post

There are trade-offs... I doubt many programs NEED AVX2 for good speed. Zen can do it, but the performance penalty has yet to be tested.
AVX256 ≠ AVX2.

AVX2 can be 128-bit or 256-bit. AVX2 adds much needed general purpose instructions to the VEX lineup as well. Completely depreciating SSE2 -> SSE5(XOP) instruction sets in the 128-bit line up.
Edited by Seronx - 8/24/16 at 11:50pm
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post #439 of 580



First of all... you need to understand something. AMDs FX series performs horribly under Blender. It takes a FX-9590 @ 4.7GHz in order to match an i7-3770K @ 3.5GHz. So, we saw a Zen 8C 16T part beat a Core i7 6900K clock for clock under Blender.

That jump in IPC performance going from Bulldozer/Vishera/Excavator etc to Zen is INSANE.

So those who are ignoring these results or saying that we need to see more tests do not get it. Blender is an IPC as well as Multi-threaded test. It tests both and for Zen to perform the way it does, clock for clock, is more than impressive.
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post #440 of 580
I think most people are just being wary after the bitter disappointment that BD turned out to be. That said, its pretty silly to simply discount Zen's impressive performance parity with Intel in Blender, a bench that was widely used and quoted around here right up until the point where AMD showed they could actually beat Intel clock-for-clock in it. After that all the sudden Blender is irrelevant and misleading as a bench. rolleyes.gif
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