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Asus EN8600GT Magic OCing

post #1 of 5
Thread Starter 
Hi guys,

been reading some 8600GT related articles on the forum and i have a question.

Most GPUs here appear with a higher memory than mine(which is about 3 years old). They usually have 700MHz while mine is at 400MHz. I've also been thinking about it and i thought it might be from the memory type difference (mine is a DDR2). This is the reason for the difference in memory, right?

My GPU: http://www.newegg.com/Product/Product.aspx?Item=N82E16814121231
A reference site i got off the forum: http://www.gpureview.com/show_cards.php?card1=513&card2=#

Now to other questions i have smile.gif

I've also been trying to OC my card and this is what i came up with:

Original
fb58e678.gif

Overclocked
1.gif


The max i was able to get to without getting yellow artifacts in AtiTool was Core 662 / Shader 1458 but i decided to stay a tad under it.

Now the question.. I've always wondered about this, but can i just overclock the memory without doing anything extra or do i need to volt mod it first? I gave it a shot and set it to 450MHz (that got the Bandwidth to about 14.2GB/s) but just as a test.

My temps are 45C Idle and max 60C under load(it only reached 63C in Furmark).
My System
(19 items)
 
  
CPUMotherboardGraphicsGraphics
Athlon II X4 640 GA-M57SLI-S4 rev 2.0 ASUS EN8600GT ASUS EN8600GT 
RAMHard DriveHard DriveOptical Drive
Kingston WDC 500GB 00AADS-00S9B SAMSUNG HD103-SI ASUS DRW-20B1LT 
CoolingCoolingCoolingOS
Cooler Master Hyper 212+ 120mm Xilence Red Wing @ 1300rpm 120mm Xilence Red Wing @ 1500rpm Windows 7 Ultimate x64 
MonitorKeyboardPowerCase
LG M208WA 20" A4Tech Wireless Keyworks Office Thermaltake TR2 500W PP Nameless 
MouseMouse PadAudio
A4Tech Wireless Optical Mouse 
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My System
(19 items)
 
  
CPUMotherboardGraphicsGraphics
Athlon II X4 640 GA-M57SLI-S4 rev 2.0 ASUS EN8600GT ASUS EN8600GT 
RAMHard DriveHard DriveOptical Drive
Kingston WDC 500GB 00AADS-00S9B SAMSUNG HD103-SI ASUS DRW-20B1LT 
CoolingCoolingCoolingOS
Cooler Master Hyper 212+ 120mm Xilence Red Wing @ 1300rpm 120mm Xilence Red Wing @ 1500rpm Windows 7 Ultimate x64 
MonitorKeyboardPowerCase
LG M208WA 20" A4Tech Wireless Keyworks Office Thermaltake TR2 500W PP Nameless 
MouseMouse PadAudio
A4Tech Wireless Optical Mouse 
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post #2 of 5
Quote:
Originally Posted by kyuubi654;11873334 
Now the question.. I've always wondered about this, but can i just overclock the memory without doing anything extra or do i need to volt mod it first? I gave it a shot and set it to 450MHz (that got the Bandwidth to about 14.2GB/s) but just as a test.

My temps are 45C Idle and max 60C under load(it only reached 63C in Furmark).

You can overclock the memory without volt modding just as you can the core clock or the shader clock cool.gif
    
CPUMotherboardGraphicsRAM
|Intel Core i7 860 at 4.0GHz HT on 1.31V| |Asus P7P55D Pro| |GTX 260 OC, GTS 250 OC (Folding 24/7)| |4GB Corsair xms3 at 1458 MHz, 8-8-8-20| 
Hard DriveOSMonitorPower
|WD 500GB Blue SATA, WD 500GB Black SATA| |Windows 7 Premium (64-bit)| |Asus 24" at 1920x1080, HP 19" at 1440x900| |Corsiar TX850W| 
CaseMouseMouse Pad
|Cooler Master 690 II Advanced| |Razer Naga| |Razer Goliathus Standard| 
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CPUMotherboardGraphicsRAM
|Intel Core i7 860 at 4.0GHz HT on 1.31V| |Asus P7P55D Pro| |GTX 260 OC, GTS 250 OC (Folding 24/7)| |4GB Corsair xms3 at 1458 MHz, 8-8-8-20| 
Hard DriveOSMonitorPower
|WD 500GB Blue SATA, WD 500GB Black SATA| |Windows 7 Premium (64-bit)| |Asus 24" at 1920x1080, HP 19" at 1440x900| |Corsiar TX850W| 
CaseMouseMouse Pad
|Cooler Master 690 II Advanced| |Razer Naga| |Razer Goliathus Standard| 
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post #3 of 5
Some of those 8600GT's overclocked like beasts. I had one that scored 7000 on 3DMark06, I can't remember the exact clocks though, it was awhile ago. I *think* I remember hitting 1000MHz on the core, but I can't find any of my old 8600GT threads. It might have only been 900MHz core, not 100% sure. I do know I had first place for 8600's on HWBot at one point, though it was very short lived. That run is still in the top 40 8600GT runs to this day though.

EDIT - my bad, it was my 8600GT SLI run that was on HWBot, with just over 10,000 in 06.
Edited by Aaron_Henderson - 1/8/11 at 11:56am
post #4 of 5
Thread Starter 
And if i up the memory clock does this mean that i'll be able to up the clocks for core and shader without losing stability?

How should i go about this? Should i go with 5-10MHz straps or with the usual 54MHz straps?
My System
(19 items)
 
  
CPUMotherboardGraphicsGraphics
Athlon II X4 640 GA-M57SLI-S4 rev 2.0 ASUS EN8600GT ASUS EN8600GT 
RAMHard DriveHard DriveOptical Drive
Kingston WDC 500GB 00AADS-00S9B SAMSUNG HD103-SI ASUS DRW-20B1LT 
CoolingCoolingCoolingOS
Cooler Master Hyper 212+ 120mm Xilence Red Wing @ 1300rpm 120mm Xilence Red Wing @ 1500rpm Windows 7 Ultimate x64 
MonitorKeyboardPowerCase
LG M208WA 20" A4Tech Wireless Keyworks Office Thermaltake TR2 500W PP Nameless 
MouseMouse PadAudio
A4Tech Wireless Optical Mouse 
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My System
(19 items)
 
  
CPUMotherboardGraphicsGraphics
Athlon II X4 640 GA-M57SLI-S4 rev 2.0 ASUS EN8600GT ASUS EN8600GT 
RAMHard DriveHard DriveOptical Drive
Kingston WDC 500GB 00AADS-00S9B SAMSUNG HD103-SI ASUS DRW-20B1LT 
CoolingCoolingCoolingOS
Cooler Master Hyper 212+ 120mm Xilence Red Wing @ 1300rpm 120mm Xilence Red Wing @ 1500rpm Windows 7 Ultimate x64 
MonitorKeyboardPowerCase
LG M208WA 20" A4Tech Wireless Keyworks Office Thermaltake TR2 500W PP Nameless 
MouseMouse PadAudio
A4Tech Wireless Optical Mouse 
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Reply
post #5 of 5
Thread Starter 
So i've been experimenting with some clocks now and i thought i'd post them so i can get some feedback from more experienced users smile.gif

Stock: 500/400/1188

OC1: 648/450/1404
3.gif

OC2: 648/500/1404
2.gif

I've also tested the memory clock on 550 (but i had a little incident where my PC froze after a while of apparently running trouble free) and after that on 600 (but my PC froze up instantly and gave me some really artifacted lines on the screen -.-).

Regarding the core and shader clocks, i haven't really managed to advance there. The max i could get to without getting yellow dots in AtiTool was 662/1458.

So i guess i've reached this card's limit, huh? Or is it worth trying out smaller straps and then checking for stability and performance improvements again?

Idle temp is 45C and under load on OC2 it's 61C. The ASUS cooler really seems to be doing a fine job smile.gif

Also did some benchmarks this time (no screenshots though, only txt):

3dmark 03
Stock: 12125
OC1: 13651
OC2: 14463

3dmark 05
Stock: 8006
OC1: 9035
OC2: 9634

3dmark 06
Stock: 4025
OC1: 4551
OC2: 4805
My System
(19 items)
 
  
CPUMotherboardGraphicsGraphics
Athlon II X4 640 GA-M57SLI-S4 rev 2.0 ASUS EN8600GT ASUS EN8600GT 
RAMHard DriveHard DriveOptical Drive
Kingston WDC 500GB 00AADS-00S9B SAMSUNG HD103-SI ASUS DRW-20B1LT 
CoolingCoolingCoolingOS
Cooler Master Hyper 212+ 120mm Xilence Red Wing @ 1300rpm 120mm Xilence Red Wing @ 1500rpm Windows 7 Ultimate x64 
MonitorKeyboardPowerCase
LG M208WA 20" A4Tech Wireless Keyworks Office Thermaltake TR2 500W PP Nameless 
MouseMouse PadAudio
A4Tech Wireless Optical Mouse 
  hide details  
Reply
My System
(19 items)
 
  
CPUMotherboardGraphicsGraphics
Athlon II X4 640 GA-M57SLI-S4 rev 2.0 ASUS EN8600GT ASUS EN8600GT 
RAMHard DriveHard DriveOptical Drive
Kingston WDC 500GB 00AADS-00S9B SAMSUNG HD103-SI ASUS DRW-20B1LT 
CoolingCoolingCoolingOS
Cooler Master Hyper 212+ 120mm Xilence Red Wing @ 1300rpm 120mm Xilence Red Wing @ 1500rpm Windows 7 Ultimate x64 
MonitorKeyboardPowerCase
LG M208WA 20" A4Tech Wireless Keyworks Office Thermaltake TR2 500W PP Nameless 
MouseMouse PadAudio
A4Tech Wireless Optical Mouse 
  hide details  
Reply
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