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Piledriver Changes

post #1 of 37
Thread Starter 
New things in Piledriver that may be in some or all Piledriver CPUs:
  • Input/Output Memory Management Unit Version Two(IOMMU v2)
  • Fused Multiply-Add Three(FMA3)
  • Converged Bit Manipulation Instructions(Converged BMI)
  • Trailing Bit Manipulation Instructions(Trailing BMI/TMI)
  • IPC & Power Management Improvements(IPC/Watt improvements)
  • Turbo Core Version Three(Turbo Core 3.0)

Known Piledriver A/CPUs:
  1. Trinity
  2. Viperfish(Sepang/Terramar/Vishera?)

What to expect:
  1. 10-15% increase in performance
    or
  2. 5-7.5% increase in performance and 5-7.5% decrease in power usage
    or
  3. 10-15% decrease in power usage

Known Changes:
  • Increased L1 DTLB size 32 entries to 64 entries
  • ALGUs now do ALU Functions

Core Count::
Up to 4 cores for Trinity
Up to 10 cores for Viperfish


Sources:

http://www.xbitlabs.com/news/cpu/display/20111004232129_AMD_s_Next_Generation_Piledriver_Micro_Architecture_Expected_to_Offer_10_Performance_Advantage.html

http://images.anandtech.com/doci/4955/zambezi-slide-10.jpg

http://support.amd.com/us/Processor_TechDocs/47414.pdf

http://support.amd.com/us/Processor_TechDocs/47414_15h_sw_opt_guide.pdf

Unknowns:

Things of interest:
http://www.anandtech.com/show/4813/look-out-bulldozer-here-comes-trinity-amds-2012-demo-on-video-at-idf

http://www.phoronix.com/scan.php?page=article&item=amd_trinity_early&num=1


---
Just want to post a cheat sheet
Edited by Seronx - 1/10/12 at 1:17am
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post #2 of 37
Looks promising.
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post #3 of 37
Thread Starter 
Quote:
Originally Posted by pioneerisloud View Post
Looks promising.
It does look promising

June -> Engineer Sample showing off of Trinity

September -> IDF Demo

October -> Leaks from Linux

If I was AMD I would be saying I am pretty excited with Trinity

If Trinity does well in the CPU benchmarks much better than the FX-4100 and the A8-3850

I would say IPC improved but you never know with AMD
Edited by Seronx - 10/18/11 at 5:57pm
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post #4 of 37
I will be distraught if an AM3+ socket doesn't work. PCI-e 3.0 is useless to me though.
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post #5 of 37
Thread Starter 
Quote:
Originally Posted by Conner View Post
I will be distraught if an AM3+ socket doesn't work. PCI-e 3.0 is useless to me though.
As I know of Vishera will work on the AM3+ socket

It is just unknown if there will be an AM4 socket with Vishera
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post #6 of 37
A 15% performance increase would only bring it to comparing with Phenom II?
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post #7 of 37
Thread Starter 
Quote:
Originally Posted by Heavy MG View Post
A 15% performance increase would only bring it to comparing with Phenom II?
I don't know how to answer this question as all benchmarks of the AMD FX CPUs were all less than ideal and not subjective to realistic consumer machines
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post #8 of 37
Quote:
Originally Posted by Seronx View Post
As I know of Vishera will work on the AM3+ socket

It is just unknown if there will be an AM4 socket with Vishera
AM3+ is being kept longer than originally expected. It was assumed that only first generation Bulldozer would be on AM3+ but AM3+ will also be present on S-Gen BD. However after that it is speculation but we can assume they will switch to FMx possibly on a Land Grid Array similar to G34.
post #9 of 37
Thread Starter 
Quote:
Originally Posted by 45nm View Post
However after that it is speculation but we can assume they will switch to FMx possibly on a Land Grid Array similar to G34.
The only reason for going for a Land Grid Array socket is for pin density and If Steamroller and Excavator do not need more pins it will most likely stay PGA

But we are going beyond Piledriver..lets stick around for Piledriver this time lol
Edited by Seronx - 10/18/11 at 6:56pm
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post #10 of 37
let's all hope there are some bulldozer fixes to boost performance ... and that piledriver actually makes a good 15% ipc increase


this way it wouldnt be half bad
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