PCI-E Frequency for Graphics Card Overclocking
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Hello,
To overclock my CPU, I set the frequency of my PCI Express to 100MHz, but I was wondering if to overclock my graphics card, I should increase this frequency a bit, knowing that I can go up to 150, but from what I’ve read, it’s better not to exceed 125.
If someone could advise me on this, thank you in advance.
For your information, my graphics card is a Gigabyte 8600 GT with the silent pipe 2, on which I added 1 mini CPU fan on top and 1 8 cm fan underneath.
Original core: 600MHz
Original memory: 720 MHz
To overclock my CPU, I set the frequency of my PCI Express to 100MHz, but I was wondering if to overclock my graphics card, I should increase this frequency a bit, knowing that I can go up to 150, but from what I’ve read, it’s better not to exceed 125.
If someone could advise me on this, thank you in advance.
For your information, my graphics card is a Gigabyte 8600 GT with the silent pipe 2, on which I added 1 mini CPU fan on top and 1 8 cm fan underneath.
Original core: 600MHz
Original memory: 720 MHz
Configuration: Windows XP Firefox 2.0.0.11
20 réponses
Here is an interesting tutorial on overclocking graphics cards http://ww38.wooshi.fr/Tutoriel/9-Overcloker-sa-carte-graphique.html?subid1=20200207-0722-31fc-8140-0c38110e7888
the pci-express port must remain at 100MHz!!
it can be overclocked, but the performance gain is very very low because it is not the bandwidth of the pci-express port that is limiting!
moreover, if you increase the frequency of the pci-express port too much, you will have an unstable graphics card!!
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Q6700 at 4.18GHz, 1.65Vcore, 12.203s superpi 1M, ultra 120 extreme
it can be overclocked, but the performance gain is very very low because it is not the bandwidth of the pci-express port that is limiting!
moreover, if you increase the frequency of the pci-express port too much, you will have an unstable graphics card!!
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Q6700 at 4.18GHz, 1.65Vcore, 12.203s superpi 1M, ultra 120 extreme
Did you know that overclocking your CPU is risky T_T? I overclocked my GeForce 8500 GT with 512 MB and compared it to a GeForce 8600 GT with 512 MB (also overclocked to the same level), and the GeForce 8500 GT beats the GeForce 8600 GT T_T.
The CPU is not a problem; I read that this 8600 GT could be overclocked to 650 on the core and 1000 on the memory, but those values are not stable at all on my end.
Moreover, before my CPU overclocking, it seems to me that my GPU was stable at higher frequencies than it is now. Hence my question about the PCI-E frequency being at 100MHz.
As for your card, it seems normal to me that by overclocking it, you would get better performance; that’s the principle of overclocking, right?
On 3DMark 2006, I can achieve high scores; however, the GPU overclocking is not stable in the long run (1 hour of CoD4 and it crashes).
I was wondering what maximum frequencies this type of card could reach while remaining stable.
My E6550 processor is running at 3.75 GHz compared to 2.33 GHz stock, stable after 2 hours of Orthos.
Moreover, before my CPU overclocking, it seems to me that my GPU was stable at higher frequencies than it is now. Hence my question about the PCI-E frequency being at 100MHz.
As for your card, it seems normal to me that by overclocking it, you would get better performance; that’s the principle of overclocking, right?
On 3DMark 2006, I can achieve high scores; however, the GPU overclocking is not stable in the long run (1 hour of CoD4 and it crashes).
I was wondering what maximum frequencies this type of card could reach while remaining stable.
My E6550 processor is running at 3.75 GHz compared to 2.33 GHz stock, stable after 2 hours of Orthos.
Apparently, 650 core and 850 memory would be more reasonable, however, it is not stable during games :( I'm trying to find out why and if this is normal.
Speed of what? Sorry, but unless I'm mistaken, "1000 MHz in speed" doesn't correspond to anything, does it?
errf, I might sound stupid, but I've never heard of the general speed...
Is it the speed at which it flies when you throw it? :P
How do you measure that (it might help me understand what you're trying to say)?
Is it the speed at which it flies when you throw it? :P
How do you measure that (it might help me understand what you're trying to say)?
So your 1000MHz corresponds to what? How is that measured?
Because for a GPU, apart from the core and memory frequency, I don't see what else there is.
Because for a GPU, apart from the core and memory frequency, I don't see what else there is.
Okay, but you need DDR2 with a high base frequency.
Because with my DDR3 and a 720MHz base, I can't see how to reach stable 1000MHz.
Furthermore, memory frequency doesn't provide much in terms of performance; it's more the core frequency that's interesting.
Because with my DDR3 and a 720MHz base, I can't see how to reach stable 1000MHz.
Furthermore, memory frequency doesn't provide much in terms of performance; it's more the core frequency that's interesting.
ok but 720MHz of DDR3 is already faster than 1000MHz of DDR2 normally, and it's especially at the core level that it matters, so that's what I would like to overclock as a priority.
Well, actually it's more complex!!
After your very clear explanations!! (especially about the overall speed!! So well done!! If it keeps going like this, when you don't know, you keep quiet!!)
So a graphics card is a motherboard and a processor and RAM to simplify!!
You have the GPU (like the CPU), the bus (a bit like a FSB), and then the memory!!
These three have a frequency!! RAM has latency!
If you overclock your GPU while it's your bus that's limiting you, then it's useless!!
Generally, the RAM frequency is the same as the bus frequency!
There you go, I hope that now it seems clearer!!
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Q6700 at 4.18GHz, 1.65Vcore, 12.203s superpi 1M, ultra 120 extreme
After your very clear explanations!! (especially about the overall speed!! So well done!! If it keeps going like this, when you don't know, you keep quiet!!)
So a graphics card is a motherboard and a processor and RAM to simplify!!
You have the GPU (like the CPU), the bus (a bit like a FSB), and then the memory!!
These three have a frequency!! RAM has latency!
If you overclock your GPU while it's your bus that's limiting you, then it's useless!!
Generally, the RAM frequency is the same as the bus frequency!
There you go, I hope that now it seems clearer!!
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Q6700 at 4.18GHz, 1.65Vcore, 12.203s superpi 1M, ultra 120 extreme
Yes, it's very clear and I had a feeling about the "general speed" thing, that's why I took the liberty of asking where it came from because it seemed like a quirky thing.
That said, I don't know how to view or edit the bus frequency; on the other hand, I would like to know if I should keep my PCI-E port frequency at 100MHz or if it's better to increase it, and if so, by what measures.
Thanks
That said, I don't know how to view or edit the bus frequency; on the other hand, I would like to know if I should keep my PCI-E port frequency at 100MHz or if it's better to increase it, and if so, by what measures.
Thanks