new parts not working as planned?

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Milky Kou

Milky Kou

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Dec 20, 2013
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[moved from another thread as i think it was in the wrong one. this is for windows 7 with the playclaw software as playclaw doesnt seem to have proper forums]

so i just updated my components in my system, got me an 8 core cpu and a new SSD and new motherboard and on my last mobo and cpu, with certian games i was able to record with playclaw at 60 fps, now with all that in mind and with a new cpu and such, now i cant record games at the same settings at 60 fps. but at a lower 43-48 fps, but idk why. i have the latest drivers for my mobo cpu and gpu. and i have my settings to the default like last time but i still get a drop when recording, though i shouldnt theoreticly with the 8 cores. so im not sure what to do here. any advice will help. below is my dxdiag to help out.

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System Information
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Time of this report: 3/15/2014, 01:23:12
Machine name: MILKY-PC
Operating System: Windows 7 Professional 64-bit (6.1, Build 7601) Service Pack 1 (7601.win7sp1_rtm.101119-1850)
Language: English (Regional Setting: English)
System Manufacturer: To be filled by O.E.M.
System Model: To be filled by O.E.M.
BIOS: BIOS Date: 11/07/13 10:59:17 Ver: 04.06.05
Processor: AMD FX(tm)-8320 Eight-Core Processor (8 CPUs), ~3.5GHz
Memory: 8192MB RAM
Available OS Memory: 8092MB RAM
Page File: 6336MB used, 9845MB available
Windows Dir: C:\Windows
DirectX Version: DirectX 11
DX Setup Parameters: Not found
User DPI Setting: Using System DPI
System DPI Setting: 96 DPI (100 percent)
DWM DPI Scaling: Disabled
DxDiag Version: 6.01.7601.17514 64bit Unicode
 
Solution
T
you may be seeing the combined effect of scheduling issues due to the fact that windows 7 was released long before the current amd cpu family was introduced, together with a cpu whose performace is a mixed bag on non-heavily threaded software. unlike intel SMT's cores those 8 are actually 8 cores, but only half of them have floating point units. on your old cpus, there were 4 full core, each with fp units, so it did not matter to which core a thread was to be assigned, on your new one it does. i'm not sure whether a service pack / hotfix for Win7 contained that fix, i'd have to look into it. windows 8 is aware of those latter amd cpus so the scheduling is handled properly.

if everything else is unchanged, my guess is that's the reason.
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Milky Kou

Milky Kou

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Dec 20, 2013
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well thats the weird thing, on my old less powerful cpu, there was no frame drop at all, now on games that run at even 300 fp [hl2 for example] im getting a major frame drop on my new cpu and motherboard, but on my old one i didnt get any fram drop. so im not sure wherein the problem lies
 
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thomasjames

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Jul 19, 2013
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you may be seeing the combined effect of scheduling issues due to the fact that windows 7 was released long before the current amd cpu family was introduced, together with a cpu whose performace is a mixed bag on non-heavily threaded software. unlike intel SMT's cores those 8 are actually 8 cores, but only half of them have floating point units. on your old cpus, there were 4 full core, each with fp units, so it did not matter to which core a thread was to be assigned, on your new one it does. i'm not sure whether a service pack / hotfix for Win7 contained that fix, i'd have to look into it. windows 8 is aware of those latter amd cpus so the scheduling is handled properly.

if everything else is unchanged, my guess is that's the reason.
 
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Solution
Milky Kou

Milky Kou

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Dec 20, 2013
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well i also just got me a brand new SSD as well so i dont think that would be the issue, and my 2TB hard drive runs fine as well cause i had to replace it recently.
 
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thomasjames

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Jul 19, 2013
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ok i need to go for the moment. when applied that fix might increase performance from 1% to 7% according to the app. the ugly truth is the current amd arch is just not .... what was hoped for ( i have to be careful what i say to avoid yet another flame war on this issue ) so you might not be able to get that kind of capture fps again if that's indeed what's happening.

here's a link on this issue, please read it: http://www.anandtech.com/show/5448/the-bulldozer-scheduling-patch-tested

(two fixes according to this article)
 
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Milky Kou

Milky Kou

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Dec 20, 2013
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ill chekc when i get home, theres still a few other updates needing to install on my pc
 
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