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CPU/GPU bottlenecking?

post #1 of 11
Thread Starter 
This is my first post here, I'm going to describe everything the best that I can. My system is described in the end of this post, if anything is missing that may give you a hint to help me, let me know. Although my components specifications are easy to find, I provided a link to them. Also, I'm not asking for a solution to my problem, but for a way to find it or to enlight me if it's really a problem. My native language is Portuguese, not English, so there could easily be some mistakes.

I have problems playing games like NFS Shift 2, NFS Hot Pursuit 2010 and CoD Modern Warfare 2 with antialiasing. I can crank up almost everything to the max, except antialiasing. As soon as I touch it (at least anything above 2xAA), I get major stuttering. Although with 2xAA it's playable, stuttering occurs from time to time. And, of course, with 0xAA no stuttering occurs (as crazy as it may sound... /sarcasm). Neither the CPU gets hot (55ºC max) nor the GPU (65ºC max) in OCCT benchmark tests. On other games, like Portal 2, Garry's Mod (and any other Source-based game), Burnout Paradise, DiRT2 (4xAA in this game gives me about 30fps, but no serious stuttering) plays like a charm with 4xAA.

Before I had this GPU, I had a Sapphire 4870 which I broke its warranty really soon and then it stopped working for no reason. So I bought this one. The 4870 could play NFS Shift with 4xAA with no stuttering, where in this one I could only play at 2xAA without any headache.
I am not considering upgrades to this computer since I have no money to do so, except to buy another RAM stick.

Resolutions I play:
NFS Shift 2: 1360x768 (windowed mode, dunno why in windowed mode stuttering does not occur so much)
CoD MW2: 1440x900 (fullscreen, native resolution)
Portal 2: 1440x900 (fullscreen, native resolution)
Garry's Mod: 1440x900 (fullscreen, native resolution)
DiRT2: 1440x900 (fullscreen, native resolution)
Burnout Paradise: 1440x900 (fullscreen, native resolution)

CPU: Intel Core2Duo E7400 @ 3.6GHz / Cooler: Zalman CNPS9300 AT
RAM: Kingston HyperX 2GB DDR2-1066MHz (only one, I
Mobo: ASUS P5KPL-AM IN/ROEM/SI (the one in the link has more 3 audio jacks and more 2 SATA connectors, but everything else is the same)
GPU: PowerColor HD5770 512MB
PSU: AeroCool E78-730
HDD#1: Western Digital Caviar Green 500GB (where I have my OS, documents and games)
HDD#2: Western Digital Scorpio Black 320GB (where I have my downloads)
Case: Thermaltake Element G
Edited by GetReal - 5/9/11 at 10:42am
post #2 of 11
Driver issues, I presume.
AMD is not always good on that part.

..but you do have a non-preferred PSU. That could cause it, but I doubt that's the case.
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post #3 of 11
Thread Starter 
The strange thing is that with the 4870 (that requires at least 500W) didn't had stuttering whatsoever and with the 5770 (that requires at least 450W) stuttering is present. The only games I could really compare to was Source-based games and NFS Shift (the first one). I think this GPU is faulty as hell, since I have a friend of mine that has one 5770 and can play CoD MW2 without a sweat (he has a Core i5, though).
post #4 of 11
Quote:
Originally Posted by GetReal View Post
The strange thing is that with the 4870 (that requires at least 500W) didn't had stuttering whatsoever and with the 5770 (that requires at least 450W) stuttering is present. The only games I could really compare to was Source-based games and NFS Shift (the first one). I think this GPU is faulty as hell, since I have a friend of mine that has one 5770 and can play CoD MW2 without a sweat (he has a Core i5, though).
Same resolution ?
And have you tried swapping your GPU with his ?
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post #5 of 11
Thread Starter 
He plays at 1280x1024 (1310720 pixels) and I play at 1440x900 (1296000 pixels). Not equal, quite close, mine being a smaller resolution.
And no I haven't, I forgot to do so last time we were at a lan party.
post #6 of 11
Quote:
Originally Posted by GetReal View Post
He plays at 1280x1024 (1310720 pixels) and I play at 1440x900 (1296000 pixels). Not equal, quite close, mine being a smaller resolution.
And no I haven't, I forgot to do so last time we were at a lan party.
If you can, I would suggest that. Or in general swapping your GPU into another computer to see if there happends to be any difference.

Again, it may be a driver issue.
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post #7 of 11
The 5770 is no slouch. My monitors are each 1440x900 as well. This card can handle eyefinity on 3 of your monitors no problem. I don't tend to play with AA though, having to push this many pixels.
2017 Build
(10 items)
 
   
CPUMotherboardGraphicsRAM
Ryzen 7 1700X ASRock X370 Killer SLI/ac PowerColor R9 280 3GB 2x Corsair Venceance LPX 32GB DDR4-3200 (4x16GB) 
Hard DriveHard DriveCoolingMonitor
Sandisk Ultra II 960GB SSD Mushkin Reactor 960GB MLC SSD Corsair H110i 34" LG 34UC88-B 3440x1440 
PowerCase
EVGA SuperNOVA G2 750W Phanteks Enthoo Evolv ATX TG 
CPUCPUCPUCPU
AMD Opteron 8431 AMD Opteron 8431 AMD Opteron 8431 AMD Opteron 8431 
MotherboardRAMHard DriveOptical Drive
Supermicro H8QME-2+ 32GB DDR2-667 ECC Registered (16x2GB) 2x Samsung F3 1TB 2x Toshiba 5TB 
CoolingOSMonitorPower
4x Hyper TX-3 Debian Wheezy Headless Corsair CX750M 
  hide details  
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2017 Build
(10 items)
 
   
CPUMotherboardGraphicsRAM
Ryzen 7 1700X ASRock X370 Killer SLI/ac PowerColor R9 280 3GB 2x Corsair Venceance LPX 32GB DDR4-3200 (4x16GB) 
Hard DriveHard DriveCoolingMonitor
Sandisk Ultra II 960GB SSD Mushkin Reactor 960GB MLC SSD Corsair H110i 34" LG 34UC88-B 3440x1440 
PowerCase
EVGA SuperNOVA G2 750W Phanteks Enthoo Evolv ATX TG 
CPUCPUCPUCPU
AMD Opteron 8431 AMD Opteron 8431 AMD Opteron 8431 AMD Opteron 8431 
MotherboardRAMHard DriveOptical Drive
Supermicro H8QME-2+ 32GB DDR2-667 ECC Registered (16x2GB) 2x Samsung F3 1TB 2x Toshiba 5TB 
CoolingOSMonitorPower
4x Hyper TX-3 Debian Wheezy Headless Corsair CX750M 
  hide details  
Reply
post #8 of 11
Thread Starter 
A real quick stupid question: can RAM be the problem? I have only one RAM stick, if I add one more (exactly the same, of course) to enable Dual-Channel, would that help to put a stop in the stuttering?

EDIT:

Quote:
Originally Posted by p4p3r View Post
Again, it may be a driver issue.
And I start to smell it really is faulty drivers. I'm having this issue (from time to time, not always). I noticed that was it because I was playing NFS Shift2 and the same pop-up in the tray appeared. I'll continue to read that link and then try something out of this.
Edited by GetReal - 5/10/11 at 2:01pm
post #9 of 11
Thread Starter 
delete?
Edited by GetReal - 5/10/11 at 2:08pm
post #10 of 11
Quote:
Originally Posted by GetReal View Post
A real quick stupid question: can RAM be the problem? I have only one RAM stick, if I add one more (exactly the same, of course) to enable Dual-Channel, would that help to put a stop in the stuttering?

EDIT:



And I start to smell it really is faulty drivers. I'm having this issue (from time to time, not always). I noticed that was it because I was playing NFS Shift2 and the same pop-up in the tray appeared. I'll continue to read that link and then try something out of this.
Driver or a faulty card I'd say.
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