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[TPU] AMD Trinity (Piledriver) Integer/FP Performance Higher Than Bulldozer, Clock-for-Clock - Page 7

post #61 of 118
Quote:
Originally Posted by Dmac73 View Post


IB is only around 7-9% better IPC than SB and ive also seen very recent news linking IB retail to OC significantly worst than SB. So this really opens up the door for PD.

this. this is about all that we've seen of ivybridge so far.
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post #62 of 118
Quote:
Originally Posted by lordikon View Post

I remember seeing news about Ivy-bridge being 10-15% higher IPC, and isn't Sandy Bridge something like 20% higher IPC than 45nm Nehalem?

Ivybridge is around 5% faster on average according to the previews we've seen. You wouldn't get 10-15% from a die shrink.

And as for SB IPC:

http://en.inpai.com.cn/doc/enshowcont.asp?id=7947&pageid=7705

Compare the i5 760 to the i5 2300.... ranges from around 5-15% faster.

Edit: Couple more:

2036?k=eff2654aa2e732115e0abc8c0bd7bb3d

2038?k=c50808064527c40983c648aff78539c6

2037?k=894bc975465beb12e7da6b3886b2f888
Edited by GameBoy - 4/10/12 at 5:24pm
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post #63 of 118
What always worries me about AMD CPU/Platform is not the Single Core performance. Its that they are very very behind Intel with Multi GPU scaling.
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post #64 of 118
rolleyes.gif ^ Proof? They are no farther behind in multi-GPU scaling than behind in IPC.
Edited by Redwoodz - 4/10/12 at 6:19pm
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post #65 of 118
Quote:
Originally Posted by Redwoodz View Post

rolleyes.gif ^ Proof? They are no farther behind in multi-GPU scaling than behind in IPC.

I was basing my thought on this review they did when BD first came out. http://www.hardocp.com/article/2011/11/03/amd_fx8150_multigpu_gameplay_performance_review/1
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post #66 of 118
Quote:
Originally Posted by ZealotKi11er View Post

I was basing my thought on this review they did when BD first came out. http://www.hardocp.com/article/2011/11/03/amd_fx8150_multigpu_gameplay_performance_review/1

That's still because of the single core performance. to quote the article: "When we upgraded from an Intel i7 920 to the i7 2600K, we saw performance increase by as much as 40% with the new CPU with 3-way SLI." The i7 9xx were slower than 2xxx series cause of IPC, same reason Bulldozer is behind.
Quote:
Originally Posted by Uncivilised View Post

He has a point tho, wen the 480 first came out they were equal to or only slightly surpassed the 5850

Not true at all: http://www.hardwarecanucks.com/forum/hardware-canucks-reviews/30297-nvidia-geforce-gtx-480-review-25.html
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post #67 of 118
My 5870s couldn't run BF3 very well in CF with PhenomII (about 60-70% usage typically), but now run always at 100% usage with my SB. I would say there's a big difference in multi-gpu scaling.
    
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post #68 of 118
Quote:
Originally Posted by ZealotKi11er View Post

What always worries me about AMD CPU/Platform is not the Single Core performance. Its that they are very very behind Intel with Multi GPU scaling.

Both of these are due to the same thing. So the single core performance does effect you.

Chipset comes into play a bit too, but the IPC is what holds back multi scaling the most.
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post #69 of 118
Quote:
Originally Posted by Dmac73 View Post

Both of these are due to the same thing. So the single core performance does effect you.
Chipset comes into play a bit too, but the IPC is what holds back multi scaling the most.

Technically it's the IPS (instructions per second), not the IPC (instructions per clock). tongue.gif
 
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post #70 of 118
Quote:
Originally Posted by Xenthos View Post

Nyea... not really tho.
Intels Clarkdale - Arrandale in 2010.
But way before that IBM was first. IBM Cell. In 2000.

Arrandale isn't an APU. First, the CPU and GPU isn't on one die. Heck, the CPU is 32nm and GPU is 45nm! I'd personally define APU as IGP + CPU on one die. Having them both on the same socket (CPU and IGP) doesn't cut it for me.

Cell, perhaps was - I'd have to look into it. But what's really different about AMD's APU roadmap is they're going to offload floating point calculations to the IGP, and then you can take advantage of a really powerful IGP for FP, and just use primarily ALU's ("integer cores") for the CPU. Maybe even go to CPU = ALU, IGP = FPU eventually, who knows? Once AMD gets to that point, their CPU performance will increase greatly. Now, the only downside with AMD's approach is that their SP's are still "small" even though they're bigger than VLIW4. On the other hand, Intel's integrated HD 3000 has 12 EU's, probably ~200M transistors. That gives Intel an advantage for video encoding at least, and I'd assume something like HD 3000 would work better for GPGPU.
 
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