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post #321 of 627
This is from wikipedia, and if it becomes true at the price of current bulldozer. Then I think this will surely be a good buy thumb.gif
Quote:
AMD says that this 2nd-generation FX-series processor would offer up to 20% to 30% better performance increase under digital media workloads
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post #322 of 627
Quote:
Originally Posted by sumitlian View Post

This is from wikipedia, and if it becomes true at the price of current bulldozer. Then I think this will surely be a good buy thumb.gif

Wikipedia can be incorrect at times,besides Piledriver is just what Bulldozer originally should have been from the start,I wouldn't be expecting much more than 10-15% more performance than BD because it's essentially a Bulldozer chip. PD will most likely retain problems from BD,ie the problems below quoted from 2advanced.
Quote:
Originally Posted by 2advanced View Post

Any truth to this? Looks like Piledriver will carry over some of the issues of BD.
Bulldozer is performing badly mostly because of:
1) Combination of small L1 caches and slow L2 caches. This problem stays with piledriver.
2) L1 instruction cache aliasing problems and write-through L1 caches causing excessive L2 traffic. This problem stays with piledriver
3) The made couple of small mistakes somewhere and it cannot reach the clock speeds it was supposed to reach/what speeds most of it's pipeline would allow. Piledriver will fix this.
4) To get full floating point performance, you have to use AMD's own FMA4 instructions. No legacy software uses those, and not all new software is going to use them because intel is not going to implement those same instructions. Piledriver is going to support Intel Haswell-compatible FMA3, so new code optimized to intel will give full fpu performance on piledriver, no need for amd-specific optimizations.
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post #323 of 627
Quote:
Originally Posted by 2advanced View Post

Any truth to this? Looks like Piledriver will carry over some of the issues of BD.
Bulldozer is performing badly mostly because of:
1) Combination of small L1 caches and slow L2 caches. This problem stays with piledriver.
2) L1 instruction cache aliasing problems and write-through L1 caches causing excessive L2 traffic. This problem stays with piledriver
3) The made couple of small mistakes somewhere and it cannot reach the clock speeds it was supposed to reach/what speeds most of it's pipeline would allow. Piledriver will fix this.
4) To get full floating point performance, you have to use AMD's own FMA4 instructions. No legacy software uses those, and not all new software is going to use them because intel is not going to implement those same instructions. Piledriver is going to support Intel Haswell-compatible FMA3, so new code optimized to intel will give full fpu performance on piledriver, no need for amd-specific optimizations.

I'm skeptical of this. If the above problems did indeed carry over to PD then Trinity shouldn't be performing as well as we have been seeing, right? After all it only has L1 and L2 cache. I can't imagine Vishera performing worse than Trinity.
post #324 of 627
Quote:
Originally Posted by computerparts View Post

I'm skeptical of this. If the above problems did indeed carry over to PD then Trinity shouldn't be performing as well as we have been seeing, right? After all it only has L1 and L2 cache. I can't imagine Vishera performing worse than Trinity.

Good point.
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post #325 of 627
Quote:
Originally Posted by computerparts View Post

I'm skeptical of this. If the above problems did indeed carry over to PD then Trinity shouldn't be performing as well as we have been seeing, right? After all it only has L1 and L2 cache. I can't imagine Vishera performing worse than Trinity.

Trinity's cpu performance isn't spectacular tongue.gif The GPU side of it is impressive though
Edited by Tslm - 4/29/12 at 6:11am
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post #326 of 627
I wonder If piledrive will work on my crosshair IV.... its only AM3 but my 8150 works in it beautifully
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post #327 of 627
Quote:
Originally Posted by Malo View Post

I wonder If piledrive will work on my crosshair IV.... its only AM3 but my 8150 works in it beautifully

It probably will as the fx chip Worked ,You will probably just need a bios update
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post #328 of 627
Quote:
Originally Posted by Tslm View Post

Trinity's cpu performance isn't spectacular tongue.gif The GPU side of it is impressive though

Well let's compare. Below is a screenshot of an A10 mobile version in Performance Test 7 along with a screenshot of an overclocked FX-8120. What I find particularly interesting are the integer numbers.

Trinity
552


FX8120 @ 4.5ghz
415
Edited by computerparts - 4/29/12 at 3:48pm
post #329 of 627
Woah.
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post #330 of 627
Quote:
Originally Posted by computerparts View Post

Well let's compare. Below is a screenshot of an A10 mobile version in Performance Test 7 along with a screenshot of an overclocked FX-8120. What I find particularly interesting are the integer numbers.
Trinity
552
FX8120 @ 4.5ghz
415

Nice analysis
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