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How To: Overclock Your AMD / ATi GPU - Page 22

post #211 of 644
Is anyone running their 5970 above 850/1200 on the stock cooler?
    
CPUMotherboardGraphicsRAM
Phenom II X6 1100T Black Edition ASUS Crosshair IV Formula XFX 5970 2Gb BE + Sapphire 5870 1Gb Game Edition 4Gb OCZ DDR3 PC3-12800 BE CL8 
Hard DriveOptical DriveOSMonitor
OCZ Vertex 2 3.5 120GB E SSD + WD Caviar Black 1Tb ASUS DRW-24B1LT DVDRW W7 x64 Pro LG 21.5" LCD 
KeyboardPowerCaseMouse
Logitech G110 Corsair AX850 Sleeved Lian Li PC-P50WB Logitech G5 
Mouse Pad
Err... yes 
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CPUMotherboardGraphicsRAM
Phenom II X6 1100T Black Edition ASUS Crosshair IV Formula XFX 5970 2Gb BE + Sapphire 5870 1Gb Game Edition 4Gb OCZ DDR3 PC3-12800 BE CL8 
Hard DriveOptical DriveOSMonitor
OCZ Vertex 2 3.5 120GB E SSD + WD Caviar Black 1Tb ASUS DRW-24B1LT DVDRW W7 x64 Pro LG 21.5" LCD 
KeyboardPowerCaseMouse
Logitech G110 Corsair AX850 Sleeved Lian Li PC-P50WB Logitech G5 
Mouse Pad
Err... yes 
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Reply
post #212 of 644
How reliable are stability tests and benchmarks for gpus? Is it common have your gpu oc stable on stability tests / benchmarks and unstable when playing games?

My 5770 crossfire oc is stable on Kombustor stability test (15 minutes) and I can run 3d Mark Vantage benchmark with no problems whatsoever, but my system is freezing when playing games. I know is related to the gpu oc because I don't have this issue when I disable the overclock. I really don't know what to do.
Edited by ytsejam - 7/6/10 at 11:39pm
post #213 of 644
Hello. I am new here and I hope this is the correct place to post this question. I have searched and read as many related posts as I could find, but I could not find a clear solution to my problem.

I recently purchased an HIS Radeon HD 5850 with their iCooler V. The card runs great and stays very cool (60 degrees at max load / 50% fan). However, I would like to overclock it for more speed. The VGA BIOS appears to be limited to 775/1125 (core/memory) and the card is perfectly stable when overclocking to those speeds.

By using MSI AfterBurner 1.6 and enabling unofficial overclocking, I was able to get the card stable at 830/1300 at stock voltage. However (and here is my problem), the driver now crashes whenever playing flash videos (ie. 2D acceleration). In addition, ATI's PowerPlay technology for reducing power and speed when the card is not in use no longer functions correctly. The card will slow itself down often during active game play. These symptoms go away when staying under the 775/1125 limit even though it is above stock speeds.

Does anyone know how I can solve these problems? Do I need to flash my BIOS to something more flexible? If so, what would that be and how do I go about it? Or am I just stuck at 775/1125?

Thanks!
post #214 of 644
I have two cards at home. One is a ATI HD4650 and the other one is a Nvidia 8400gs. Both are 512mb. Now, stock, the ati card packs a core clock of 600 Mhz and a memory clock of 400 Mhz. The Nvidia card has a 567 Mhz core clock and has a 400 Mhz memory clock. Ati has a 128bit interface while the Nvidia has a 64bit interface only. According to riviatuner, I can overclock the ati card to 750 mhz core clock and the memory clock to 500 mhz while the nvidia card can be overclocked to a 850 mhz core clock and a 600 mhz memory clock. I currently have the ati oc with ati ccc at 705 mhz core and 540 mhz memory. Several guys in different forums and a guy at frys have stated that they were able to overclock the Nvidia card safely to a core clock of 800 mhz and its memory clock to 500 mhz. My question is, with this clock possibilities, which one is better? The ati card which has a 128 bit interface with lower oc numbers or the nvidia which has a 64 bit interface only but can be oc to higher clock settings then the ati card. Everybody I've asked, thinks the best one is the ati card stock. I haven't asked with the oc possibilities. The main question here is 128 interface with lower oc settings vs the 64 interface with higher oc settings. I know this cards are not high end gaming cards but given there limits, with the overclocking, they output good numbers.
post #215 of 644
Note: I'm well aware that these are ati hd5970 and possibly nvidia 480gtx quality numbers but, they are limited to ddr2 which make them quite slower than the above mentioned. These numbers are also stock for and well overclocked by nvidia gt9000 series or ati x1000 series cards also in ddr2 and now ddr3. If anything sounds incorrect, please correct me as believe I can never stop learning.
post #216 of 644
Thread Starter 
Quote:
Originally Posted by vicm1010 View Post
I have two cards at home. One is a ATI HD4650 and the other one is a Nvidia 8400gs. Both are 512mb. Now, stock, the ati card packs a core clock of 600 Mhz and a memory clock of 400 Mhz. The Nvidia card has a 567 Mhz core clock and has a 400 Mhz memory clock. Ati has a 128bit interface while the Nvidia has a 64bit interface only. According to riviatuner, I can overclock the ati card to 750 mhz core clock and the memory clock to 500 mhz while the nvidia card can be overclocked to a 850 mhz core clock and a 600 mhz memory clock. I currently have the ati oc with ati ccc at 705 mhz core and 540 mhz memory. Several guys in different forums and a guy at frys have stated that they were able to overclock the Nvidia card safely to a core clock of 800 mhz and its memory clock to 500 mhz. My question is, with this clock possibilities, which one is better? The ati card which has a 128 bit interface with lower oc numbers or the nvidia which has a 64 bit interface only but can be oc to higher clock settings then the ati card. Everybody I've asked, thinks the best one is the ati card stock. I haven't asked with the oc possibilities. The main question here is 128 interface with lower oc settings vs the 64 interface with higher oc settings. I know this cards are not high end gaming cards but given there limits, with the overclocking, they output good numbers.
I'd take the HD4650 any day over the GS. The 8400GS line is older and considerably slower than the 4650. The 4650 is about on par with an 8600GTS at worst, and can perform close to a 8800GS. Core and memory clock are not everything, the number of shaders, texture fill rates and overall arcitecture efficiency can have a big effect on performance.
Hope this helps
post #217 of 644
Thanks for your answer. I'm still not clear on what makes the ati faster? Is it the 128bit interface? Because as far as clock and shader speeds go, the nvidia can oc higher.
CPU
AMD Phenom 9650 quad core @ 2.3 ghz

Hdd
WD 640gb @ 7200rpm

sound card
diamond extreme 7.1 dolby digital live
post #218 of 644
I'm just going to keep the Ati HD4600. I just wanted to squeeze the most out of the Nvidia 8400gs unless someone else can explain why I should choose other wise. As far as my system goes, I got a Amd phenom quad core 9650 @ 2.3ghz. 640gb hdd. Diamond Extreme 7.1 dolby digital live. 7gb ddr2 ram. 600w power supply. Windows vista 64bit. XFX HD4650 512mb oc to 705mhz core clock/ 540mhz memory clock. LG w2361vg 1080p. I know the graphics card can do better but as far as the system goes, is this a good gaming configuration on a 1 to 10 scale?
post #219 of 644
Thread Starter 
Quote:
Originally Posted by vicm1010 View Post
Thanks for your answer. I'm still not clear on what makes the ati faster? Is it the 128bit interface? Because as far as clock and shader speeds go, the nvidia can oc higher.
CPU
AMD Phenom 9650 quad core @ 2.3 ghz

Hdd
WD 640gb @ 7200rpm

sound card
diamond extreme 7.1 dolby digital live
The bus width does play into it to some extent. But that is only one of many factors as I said, The 4650 is a generation ahead of the 8400GS and so is better optimised (besides it is impossible to draw any direct comparisons clock for clock between ATi and nVidia as they are different beasts).
The GPU-z screenshots below demonstrate that the 4650 is ahead, you can see that the pixel fillrate and texture fillrate are double that of the 8400GS (of course this only shows us so much, if you look up some benchmarks for each card you will see that the 4650 is much better)





If you really want to see the difference you could always test both out in your PC and run some benchmarks and games (be warned that you may have driver issues switching from ATi to nVidia and back again so I wouldn't really recommend it)

EDIT: As far as your second post goes, it's a nice setup apart from the GPU. It's fine if your main aim is not gaming, but the 4650 will struggle in some games. Depending on what resolution you play on you would see a large gain in games buy buying a more high-end GPU (the HD5770 and up would be a good choice for ATi and the GTX260 and up would be good for nVidia).
Edited by coffeejunky - 7/12/10 at 12:14pm
post #220 of 644
Thanks for the help. This really breaks it down. I am considering the upgrade although not anytime soon. I just bought these two cards back around january. Before them, all I had was a nvidia 6600gs 256mb on a xp 32bit intel pentium D. I didn't care to much for gaming at that time but now as I have been an occasional gamer, I don't really use any of my consoles and I rather just go with a computer because you can get most of the games that consoles offer with better results. Right now I'm playing fear at its maximum settings and I'm averaging about 22 to 41 fps maximum @ 1400x1050x32 which is the highest resolution the game supports for my monitor. I've owned this game since it came out but never got around to passing it. The results aren't that convincing because according to canyourunit.com, my system can run this game at it's maximum settings like a breeze but I've seen people in other forums state that for any new games running @ 60fps+ is a great frame rate (Don't know if that's true or not) and this game is very old. According to canyourunit I can also run crysis at maximum settings. Where the card starts showing it's lack of potential is with arma 2 and gta IV therefore convincing me of the much needed upgrade. What game do you consider to be the most demanding graphic intensive of all right now?
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