- Jun 16, 2009
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I am a new person to talk around here. I need some questions answered, as I am new to overclocking. I would prefer straight-forward answers, but long answers are fine as long as they are readable.
I had been running on integrated graphics since 1998, with three computer changes. In early 2007, I realized that they would not play games very well. I kept holding on until I succumbed on June 12, 2009, when I built my first computer. Since then, my Radeon HD 4890 wants me to overclock it to 1 GHz.
There are no screenshots to give, as I have not torture tested my GPU for enough time. However, I can say that for as long as I run GPU-tool, my Radeon HD 4890 seems to run fine at 1 GHz on core and 1140 MHz on memory at 1.425V. Since I don't really care about noise, I was running the stock cooler at 100% to keep VRM temps low, but they were encroaching 90 degrees Celsius. Memory and core temps were fine, both under 70 degrees Celsius.
When I use ATI Overdrive, it gives me 1 GHz core at 1.35V.
I play games such as Empire: Total War and Sins of a Solar Empire. I plan on getting Modern Warfare 2 at launch. I play at a 1280x1024 resolution, so I know my GPU is overkill.
Simple things like a game crashing will mean I know it is unstable, but I have not tested it yet.
So this is where my questions come in. They may be simple, but it's to be cautious and to help my confidence.
1. What is the maximum safe voltage for the Radeon HD 4890 on the stock cooler?
2. What is the maximum safe temperatures of the VRMs of the Radeon HD 4890 on the stock cooler?
3. Should I try playing games at these overclocked settings to test stability?
4. What voltage should I try first, 1.35V or 1.425V.
I had been running on integrated graphics since 1998, with three computer changes. In early 2007, I realized that they would not play games very well. I kept holding on until I succumbed on June 12, 2009, when I built my first computer. Since then, my Radeon HD 4890 wants me to overclock it to 1 GHz.
There are no screenshots to give, as I have not torture tested my GPU for enough time. However, I can say that for as long as I run GPU-tool, my Radeon HD 4890 seems to run fine at 1 GHz on core and 1140 MHz on memory at 1.425V. Since I don't really care about noise, I was running the stock cooler at 100% to keep VRM temps low, but they were encroaching 90 degrees Celsius. Memory and core temps were fine, both under 70 degrees Celsius.
When I use ATI Overdrive, it gives me 1 GHz core at 1.35V.
I play games such as Empire: Total War and Sins of a Solar Empire. I plan on getting Modern Warfare 2 at launch. I play at a 1280x1024 resolution, so I know my GPU is overkill.
Simple things like a game crashing will mean I know it is unstable, but I have not tested it yet.
So this is where my questions come in. They may be simple, but it's to be cautious and to help my confidence.
1. What is the maximum safe voltage for the Radeon HD 4890 on the stock cooler?
2. What is the maximum safe temperatures of the VRMs of the Radeon HD 4890 on the stock cooler?
3. Should I try playing games at these overclocked settings to test stability?
4. What voltage should I try first, 1.35V or 1.425V.