- Joined
- May 15, 2003
- Location
- Devecey, France
Am I to the max? P4 [email protected] with AI7 inside...
Hello!
Here is my setup, a part of the story to help newbies and a few questions for gurus
Well, I'm writing to you with a rock stable P4 3.0C at 3.90 GHz (260 FSB) with an Abit AI7 mobo. To have the PC really stable, I had to set my RAM to 3:2, that's only 173 MHz yes, but I can use it with 2-3-3-6 timings @ 2.90v. The Vcore is set to 1.80v, but it seems to be more like 1.70v for real, and the Vagp is at 1.60v. The CPU and the NB are cooled by an efficient Aqua Computer watercooling and I've juste put 2x silent 80mm from Papst in front of the PWM (no heatsink for the moment). There's also a passive heatsink on the SB.
To overclock my machine, I started to search the limits of my memory. I use 2x256 MB Corsair PC3200-LL Twinx (SPD 2-3-2-6 @ 200 FSB) and 2x256 MB Corsair PC3700 (SPD 2.5-3-3-7 @ 200 FSB and 3-4-4-8 @ 233 FSB), for a total of 1 GB dual channel. Starting with only the 3200-LL, set to 1:1 FSB, 3-4-4-8, 2.80v (and the Game Accelerator to Auto Normal Auto Disable Disable), I found that I can have a stable 225 MHz using MemTest 86+. Adding the PC3700, I confirmed that speed with all my memory, only at 3-4-4-8 for now. I decided to raise the FSB to o/c the CPU. My AGP/PCI is fixed to 66/33. I easily reached 250 FSB, that's 3.75 GHz yeah, with only 1.725v and 200 MHz for the memory (5:4). Unfortunatly, at 255 FSB, the memory became instable, at only 204 MHz ! Strange ! With 3.0v, it was instable to I tried with the 3:2 divider, dropping the memory to 170 MHz, and everything became fine. The same for 260 FSB, but I needed to raise the Vcore to 1.8v (1.7 shown by sensors) to get stable. At this speed, the memory is only at 173 MHz, and I can get 2-3-3-6 working ! What's the pb with the 5:4 and the only 208 MHz? Is it the Mobo I tried with Vagp at 1.65v, but it was the same. Well, 3.90 GHz with a 2-3-3-6 memory is not bad. When I want to continue, I can't even pass 20s of MemTest86, it's freezing! (no memory error, only freezing !). At FSB 260 (173 Memory) I can do 10 Memtest86+ passes with 2-3-3-6, and at FSB 262 (175 Memory) I can't have half one with 3-4-4-8 and 3.1v? What's the matter!? What can I do? I tried with AGP/PCI to 72/34 and 74/36... but no progress.
Thanks for the reading, now I'm waiting for your advices
See U,
Hello!
Here is my setup, a part of the story to help newbies and a few questions for gurus
Well, I'm writing to you with a rock stable P4 3.0C at 3.90 GHz (260 FSB) with an Abit AI7 mobo. To have the PC really stable, I had to set my RAM to 3:2, that's only 173 MHz yes, but I can use it with 2-3-3-6 timings @ 2.90v. The Vcore is set to 1.80v, but it seems to be more like 1.70v for real, and the Vagp is at 1.60v. The CPU and the NB are cooled by an efficient Aqua Computer watercooling and I've juste put 2x silent 80mm from Papst in front of the PWM (no heatsink for the moment). There's also a passive heatsink on the SB.
To overclock my machine, I started to search the limits of my memory. I use 2x256 MB Corsair PC3200-LL Twinx (SPD 2-3-2-6 @ 200 FSB) and 2x256 MB Corsair PC3700 (SPD 2.5-3-3-7 @ 200 FSB and 3-4-4-8 @ 233 FSB), for a total of 1 GB dual channel. Starting with only the 3200-LL, set to 1:1 FSB, 3-4-4-8, 2.80v (and the Game Accelerator to Auto Normal Auto Disable Disable), I found that I can have a stable 225 MHz using MemTest 86+. Adding the PC3700, I confirmed that speed with all my memory, only at 3-4-4-8 for now. I decided to raise the FSB to o/c the CPU. My AGP/PCI is fixed to 66/33. I easily reached 250 FSB, that's 3.75 GHz yeah, with only 1.725v and 200 MHz for the memory (5:4). Unfortunatly, at 255 FSB, the memory became instable, at only 204 MHz ! Strange ! With 3.0v, it was instable to
I tried with the 3:2 divider, dropping the memory to 170 MHz, and everything became fine. The same for 260 FSB, but I needed to raise the Vcore to 1.8v (1.7 shown by sensors) to get stable. At this speed, the memory is only at 173 MHz, and I can get 2-3-3-6 working ! What's the pb with the 5:4 and the only 208 MHz? Is it the Mobo I tried with Vagp at 1.65v, but it was the same. Well, 3.90 GHz with a 2-3-3-6 memory is not bad. When I want to continue, I can't even pass 20s of MemTest86, it's freezing! (no memory error, only freezing !). At FSB 260 (173 Memory) I can do 10 Memtest86+ passes with 2-3-3-6, and at FSB 262 (175 Memory) I can't have half one with 3-4-4-8 and 3.1v? What's the matter!? What can I do? I tried with AGP/PCI to 72/34 and 74/36... but no progress.Thanks for the reading, now I'm waiting for your advices
See U,
