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Overclocking EVGA 8800GT 512MB

post #1 of 18
Thread Starter 
This card runs stock at 650core/1620shader/1850memory clock speeds. Right now I've got it overclocked and running smooth at 720/1620/1980 clock speeds. My Pixel Fillrate is 11.5GPixel/s and my Texture Fillrate is 40.3GTexel/s. The Bandwidth is 63.2GB/s.

I was wondering if these were the clocks I needed to be overclocking. Should I leave as is, increase core(decrease mem), increase memory(decrease core), or increase shader(decrease core)? Or any other variation? Thanks
   
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Bitspower White 90° Rotary Compression Fitting x1 7/16" ID x 5/8" OD Clear Tubing XSPC Xinruilian 1650RPM x4, Push/Pull Corsair AF120 rear exhaust, White ring 
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post #2 of 18
I have same card as well!

It looks like you have a decent overclock going. Look at my sig for my overclock numbers.

When you overclock a card, the core/shader is what you want most of, since the memory won't results in as much increase in frame rates in gaming.

Bump both those up until you become unstable and then back-off a little to regain stability. If you have to compromise memory speed for core speed to maintain stability, then that would be the way to go!
 
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post #3 of 18
Shader is the most important for folding Ive been told, but I would increase the first two together (locked) and your memory looks good... They all look good, I think any higher, and you will artifact. You can use ATITOOL (google it) and use the artifact tester even though it is an nvidia card.

Good Luck!
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post #4 of 18
Thread Starter 
I'm at the point right now that If I bump either my memory or core clocks up, I'll start getting artifacts in ATI-Tool(used it throughout the O/Cing process). I've heard something about anti-aliasing effects running better in games with a higher shader, and that sometimes you have to downclock the core some to get a high shader clock stable. If I get my core and shader higher after lowering my memory some, should I go for more core over shader or vice versa?
   
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post #5 of 18
Have you done the 1.1v bios mod yet? Once you have, you should be able to see significant increase in OC, assuming you have an aftermarket heatsink solution.
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post #6 of 18
I always overclock with core and shader linked. If you go unliked then I'd up Core more. My suggestion is up the Core and then the shader and test the fps while gaming to see which one performs best for you!
Edited by Gunderman456 - 12/21/08 at 9:35pm
 
BitoHeaven
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BitoHeaven
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post #7 of 18
Thread Starter 
Quote:
Originally Posted by GoHigh View Post
Have you done the 1.1v bios mod yet? Once you have, you should be able to see significant increase in OC, assuming you have an aftermarket heatsink solution.

I have not done the bios mod and my card has the stock EVGA labeled HSF. It never gets above 60ºC with this overclock though. I can see where I am limited in my core clock speed because the GPU isn't receiving enough voltage to run it or the HSF isn't cooling it enough.
   
Wife's rig
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CPUMotherboardGraphicsRAM
Intel i7-4790k 4.7GHz @ 1.299v, HT on Asus Maximus VII Hero, Z97 chipset EVGA GTX 750 TI FTW, Core 1375MHz, TDP 125W 16GB (2x8GB) G. Skill Trident X 1866MHz CL8 
Hard DriveHard DriveHard DriveOptical Drive
Samsung 840 EVO 250GB Patriot Pyro 120GB, SATA 6Gb/s Samsung Spinpoint F3 1TB, SATA 3Gb/s Liteon iHBS112-04 SATA BD burner 
CoolingCoolingCoolingCooling
XSPC Raystorm CPU Block XSPC Dual Bay res/pump - D5 Vario XSPC EX240mm radiator Bitspower White Rotary Compression Fittings x5 
CoolingCoolingCoolingCooling
Bitspower White 90° Rotary Compression Fitting x1 7/16" ID x 5/8" OD Clear Tubing XSPC Xinruilian 1650RPM x4, Push/Pull Corsair AF120 rear exhaust, White ring 
CoolingOSMonitorKeyboard
NZXT Sentry 2 Fan Controller Windows 8.1 Pro x64 Samsung B2230HD @ 1920x1080 Gateway RT3604 
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Antec Earthwatts EA-650 Green Cooler Master HAF 932 Logitech G9x Wowpad by Microthin, Graphite surface for optical 
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4.1 surround sound speakers. 5.1 when using mon... Dual 12" Cold Cathode Kit--Ultra Bright UV tubes 
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Intel P9600 Chipset: Intel GM45 Express ATI Radeon HD3470 2x4GB PC3-8500 1066MHz DDR3 
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ADATA 120GB SATA3 SSD Western Digital Scorpio Blue 320GB 5400RPM (WD3... Factory laptop HSF Windows 8.1 Pro x64 
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Wife's rig
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CPUMotherboardGraphicsRAM
Intel i7-4790k 4.7GHz @ 1.299v, HT on Asus Maximus VII Hero, Z97 chipset EVGA GTX 750 TI FTW, Core 1375MHz, TDP 125W 16GB (2x8GB) G. Skill Trident X 1866MHz CL8 
Hard DriveHard DriveHard DriveOptical Drive
Samsung 840 EVO 250GB Patriot Pyro 120GB, SATA 6Gb/s Samsung Spinpoint F3 1TB, SATA 3Gb/s Liteon iHBS112-04 SATA BD burner 
CoolingCoolingCoolingCooling
XSPC Raystorm CPU Block XSPC Dual Bay res/pump - D5 Vario XSPC EX240mm radiator Bitspower White Rotary Compression Fittings x5 
CoolingCoolingCoolingCooling
Bitspower White 90° Rotary Compression Fitting x1 7/16" ID x 5/8" OD Clear Tubing XSPC Xinruilian 1650RPM x4, Push/Pull Corsair AF120 rear exhaust, White ring 
CoolingOSMonitorKeyboard
NZXT Sentry 2 Fan Controller Windows 8.1 Pro x64 Samsung B2230HD @ 1920x1080 Gateway RT3604 
PowerCaseMouseMouse Pad
Antec Earthwatts EA-650 Green Cooler Master HAF 932 Logitech G9x Wowpad by Microthin, Graphite surface for optical 
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4.1 surround sound speakers. 5.1 when using mon... Dual 12" Cold Cathode Kit--Ultra Bright UV tubes 
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Intel P9600 Chipset: Intel GM45 Express ATI Radeon HD3470 2x4GB PC3-8500 1066MHz DDR3 
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ADATA 120GB SATA3 SSD Western Digital Scorpio Blue 320GB 5400RPM (WD3... Factory laptop HSF Windows 8.1 Pro x64 
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post #8 of 18
Quote:
Originally Posted by Dark Volker View Post
I have not done the bios mod and my card has the stock EVGA labeled HSF. It never gets above 60ºC with this overclock though. I can see where I am limited in my core clock speed because the GPU isn't receiving enough voltage to run it or the HSF isn't cooling it enough.
My backup PC has the EVGA 8800GT 512mb right now, and I've done the 1.1v Bios mod. I am using the Zalman heatsink on it, and my temps are pretty good. My card doesn't OC that well, but I've seen some ridiculous results online from others who did the BIOS mod.

To be honest though, it's probably not really worth it for you to go out and buy a $40 heatsink for your 8800GT.

Try this though... I've gotten awesome results with this simple $6 mod.

1. Replace stock TIM with OCZ Freeze. (About -2c)

2. Get a high flow 80mm fan from your pile of leftovers.

3. Using a high strength double sided tape, or hot glue gun, mount the fan to the stock fan opening so that fan is blowing into the card. I mounted it using the hot glue gun, kinda like a caulking for good bond and seal. (-3c to -5c)

I know it's kinda ghetto, but if you do it right, it actually doesn't look that bad. I was able to shave a full -8c from stock configurations with this simple mod. I did the 1.1v BIOS mod afterwards, and my OC was not limited by temps anymore (I discovered this after getting the heatsink).
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(13 items)
 
  
CPUMotherboardGraphicsRAM
i7-920(2), i7-950, i7-875K, i3-540(3), 1055T Asus, Gigabyte GTX460(4), 5770(4), GTX260, 9800GT(2) 48GB DDR3 1600s 
Hard DriveOSMonitorPower
20TB SATA2 Windows 7 64Bit Ultimate LG 32"(2), Acer 24"(2) Dell 30", LG 47" 6500W Antec, CoolerMaster, Silverstone, Corsair 
Case
CM(2), Antec(3), Corsair, LianLi 
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post #9 of 18
Thread Starter 
Quote:
Originally Posted by GoHigh View Post
1. Replace stock TIM with OCZ Freeze. (About -2c)

2. Get a high flow 80mm fan from your pile of leftovers.
Would some Arctic Silver Ceramique do just as good or better?

I'm guessing that a 80x80x25mm ThermalTake fan moving 37CFMs at full speed(fan speed controller used with fan) would be plenty of cooling for the GPU? I probably wouldn't ever have to turn the fan to full speed.
Edited by Dark Volker - 12/21/08 at 10:08pm
   
Wife's rig
(9 items)
 
CPUMotherboardGraphicsRAM
Intel i7-4790k 4.7GHz @ 1.299v, HT on Asus Maximus VII Hero, Z97 chipset EVGA GTX 750 TI FTW, Core 1375MHz, TDP 125W 16GB (2x8GB) G. Skill Trident X 1866MHz CL8 
Hard DriveHard DriveHard DriveOptical Drive
Samsung 840 EVO 250GB Patriot Pyro 120GB, SATA 6Gb/s Samsung Spinpoint F3 1TB, SATA 3Gb/s Liteon iHBS112-04 SATA BD burner 
CoolingCoolingCoolingCooling
XSPC Raystorm CPU Block XSPC Dual Bay res/pump - D5 Vario XSPC EX240mm radiator Bitspower White Rotary Compression Fittings x5 
CoolingCoolingCoolingCooling
Bitspower White 90° Rotary Compression Fitting x1 7/16" ID x 5/8" OD Clear Tubing XSPC Xinruilian 1650RPM x4, Push/Pull Corsair AF120 rear exhaust, White ring 
CoolingOSMonitorKeyboard
NZXT Sentry 2 Fan Controller Windows 8.1 Pro x64 Samsung B2230HD @ 1920x1080 Gateway RT3604 
PowerCaseMouseMouse Pad
Antec Earthwatts EA-650 Green Cooler Master HAF 932 Logitech G9x Wowpad by Microthin, Graphite surface for optical 
AudioOther
4.1 surround sound speakers. 5.1 when using mon... Dual 12" Cold Cathode Kit--Ultra Bright UV tubes 
CPUMotherboardGraphicsRAM
Intel P9600 Chipset: Intel GM45 Express ATI Radeon HD3470 2x4GB PC3-8500 1066MHz DDR3 
Hard DriveHard DriveCoolingOS
ADATA 120GB SATA3 SSD Western Digital Scorpio Blue 320GB 5400RPM (WD3... Factory laptop HSF Windows 8.1 Pro x64 
MonitorMouse
14.1" LCD Logitech Wireless Mouse M310(Indigo Scroll) 
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Wife's rig
(9 items)
 
CPUMotherboardGraphicsRAM
Intel i7-4790k 4.7GHz @ 1.299v, HT on Asus Maximus VII Hero, Z97 chipset EVGA GTX 750 TI FTW, Core 1375MHz, TDP 125W 16GB (2x8GB) G. Skill Trident X 1866MHz CL8 
Hard DriveHard DriveHard DriveOptical Drive
Samsung 840 EVO 250GB Patriot Pyro 120GB, SATA 6Gb/s Samsung Spinpoint F3 1TB, SATA 3Gb/s Liteon iHBS112-04 SATA BD burner 
CoolingCoolingCoolingCooling
XSPC Raystorm CPU Block XSPC Dual Bay res/pump - D5 Vario XSPC EX240mm radiator Bitspower White Rotary Compression Fittings x5 
CoolingCoolingCoolingCooling
Bitspower White 90° Rotary Compression Fitting x1 7/16" ID x 5/8" OD Clear Tubing XSPC Xinruilian 1650RPM x4, Push/Pull Corsair AF120 rear exhaust, White ring 
CoolingOSMonitorKeyboard
NZXT Sentry 2 Fan Controller Windows 8.1 Pro x64 Samsung B2230HD @ 1920x1080 Gateway RT3604 
PowerCaseMouseMouse Pad
Antec Earthwatts EA-650 Green Cooler Master HAF 932 Logitech G9x Wowpad by Microthin, Graphite surface for optical 
AudioOther
4.1 surround sound speakers. 5.1 when using mon... Dual 12" Cold Cathode Kit--Ultra Bright UV tubes 
CPUMotherboardGraphicsRAM
Intel P9600 Chipset: Intel GM45 Express ATI Radeon HD3470 2x4GB PC3-8500 1066MHz DDR3 
Hard DriveHard DriveCoolingOS
ADATA 120GB SATA3 SSD Western Digital Scorpio Blue 320GB 5400RPM (WD3... Factory laptop HSF Windows 8.1 Pro x64 
MonitorMouse
14.1" LCD Logitech Wireless Mouse M310(Indigo Scroll) 
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post #10 of 18
Thread Starter 
I'm noticing that I get lots of artifacts while increasing the core and shader at the same time while still downclocking the memory. Would the 1.1V bios mod help that or do I need to lower the shader to raise the core?(Core=730MHz, Shader=1728MHz, Memory=1800MHz)
   
Wife's rig
(9 items)
 
CPUMotherboardGraphicsRAM
Intel i7-4790k 4.7GHz @ 1.299v, HT on Asus Maximus VII Hero, Z97 chipset EVGA GTX 750 TI FTW, Core 1375MHz, TDP 125W 16GB (2x8GB) G. Skill Trident X 1866MHz CL8 
Hard DriveHard DriveHard DriveOptical Drive
Samsung 840 EVO 250GB Patriot Pyro 120GB, SATA 6Gb/s Samsung Spinpoint F3 1TB, SATA 3Gb/s Liteon iHBS112-04 SATA BD burner 
CoolingCoolingCoolingCooling
XSPC Raystorm CPU Block XSPC Dual Bay res/pump - D5 Vario XSPC EX240mm radiator Bitspower White Rotary Compression Fittings x5 
CoolingCoolingCoolingCooling
Bitspower White 90° Rotary Compression Fitting x1 7/16" ID x 5/8" OD Clear Tubing XSPC Xinruilian 1650RPM x4, Push/Pull Corsair AF120 rear exhaust, White ring 
CoolingOSMonitorKeyboard
NZXT Sentry 2 Fan Controller Windows 8.1 Pro x64 Samsung B2230HD @ 1920x1080 Gateway RT3604 
PowerCaseMouseMouse Pad
Antec Earthwatts EA-650 Green Cooler Master HAF 932 Logitech G9x Wowpad by Microthin, Graphite surface for optical 
AudioOther
4.1 surround sound speakers. 5.1 when using mon... Dual 12" Cold Cathode Kit--Ultra Bright UV tubes 
CPUMotherboardGraphicsRAM
Intel P9600 Chipset: Intel GM45 Express ATI Radeon HD3470 2x4GB PC3-8500 1066MHz DDR3 
Hard DriveHard DriveCoolingOS
ADATA 120GB SATA3 SSD Western Digital Scorpio Blue 320GB 5400RPM (WD3... Factory laptop HSF Windows 8.1 Pro x64 
MonitorMouse
14.1" LCD Logitech Wireless Mouse M310(Indigo Scroll) 
  hide details  
Reply
   
Wife's rig
(9 items)
 
CPUMotherboardGraphicsRAM
Intel i7-4790k 4.7GHz @ 1.299v, HT on Asus Maximus VII Hero, Z97 chipset EVGA GTX 750 TI FTW, Core 1375MHz, TDP 125W 16GB (2x8GB) G. Skill Trident X 1866MHz CL8 
Hard DriveHard DriveHard DriveOptical Drive
Samsung 840 EVO 250GB Patriot Pyro 120GB, SATA 6Gb/s Samsung Spinpoint F3 1TB, SATA 3Gb/s Liteon iHBS112-04 SATA BD burner 
CoolingCoolingCoolingCooling
XSPC Raystorm CPU Block XSPC Dual Bay res/pump - D5 Vario XSPC EX240mm radiator Bitspower White Rotary Compression Fittings x5 
CoolingCoolingCoolingCooling
Bitspower White 90° Rotary Compression Fitting x1 7/16" ID x 5/8" OD Clear Tubing XSPC Xinruilian 1650RPM x4, Push/Pull Corsair AF120 rear exhaust, White ring 
CoolingOSMonitorKeyboard
NZXT Sentry 2 Fan Controller Windows 8.1 Pro x64 Samsung B2230HD @ 1920x1080 Gateway RT3604 
PowerCaseMouseMouse Pad
Antec Earthwatts EA-650 Green Cooler Master HAF 932 Logitech G9x Wowpad by Microthin, Graphite surface for optical 
AudioOther
4.1 surround sound speakers. 5.1 when using mon... Dual 12" Cold Cathode Kit--Ultra Bright UV tubes 
CPUMotherboardGraphicsRAM
Intel P9600 Chipset: Intel GM45 Express ATI Radeon HD3470 2x4GB PC3-8500 1066MHz DDR3 
Hard DriveHard DriveCoolingOS
ADATA 120GB SATA3 SSD Western Digital Scorpio Blue 320GB 5400RPM (WD3... Factory laptop HSF Windows 8.1 Pro x64 
MonitorMouse
14.1" LCD Logitech Wireless Mouse M310(Indigo Scroll) 
  hide details  
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