View Full Version : Upgrading & Overclocking

01-23-06, 08:12 PM
This is what I'm looking at doing (in a few weeks);

I have a MSI K7N2 Delta-L board(MS-6570)
w/ the nVidia nForce 2 Ultra 400 chipset
and an AMD Athlon XP 2500+ barton core (unlocked).
Drivers and Bios are all updated

First; I'm getting a new video card,

The eVGA Geforce 6800GS CO Edition ($199)

400 MHz GPU AGP(3.0) 8X
256 MB, 256 bit 2ns (8x32) GDDR3 (http://en.wikipedia.org/wiki/GDDR3)
1100 MHz (effective)
32.0 GB/s Memory Bandwidth
Dual 400 MHz RAMDACs
12 Superscaler Pixel Pipelines
[can be unlocked to 16 Pixel Pipelines and 6 Vertex Shaders] (http://www.guru3d.com/article/Videocards/314/15/)
CineFX 3.0 Engine, UltraShadow II Technology,
Intellisample 3.0 Technology, Hardware MPEG-2 Encoder
VPE, DVC, DVI-I, S-Video, Full OpenGL ICD
64-phase Video Scaler

guru 3D review (http://www.guru3d.com/article/Videocards/314/2/)

3DMark 03 Professional Edition
3DMark 05 Business Edition (http://www.guru3d.com/article/Videocards/314/11/)

AquaMark 3 (http://www.guru3d.com/article/Videocards/314/12/)

Second; I'm going to upgrade my RAM to Dual Channel

CORSAIR XMS 1GB (2 x 512MB) 184-Pin DDR SDRAM (http://www.corsairmemory.com/corsair/products/specs/twinx1024-3200c2.pdf) ($99)
Unbuffered DDR 400 (PC 3200) Dual Channel Kit System Memory
Cas Latency 2
Timing 2-3-3-6
w/Heat Spreader

Latency Settings and their Impact on Memory Performance (http://images10.newegg.com/uploadfilesfornewegg/itemintelligence/Corsair/Corsair%20Low%20Latency%20Applications%20Note.pdf)

I put together my present system about three years ago,
with the intention to upgrade (vid & memory)
and overclock the barton core to 3200+
by simply changing the fsb to 200x11 = 2200Ghz
I already replaced the stock heatsink/fan a long time ago
w/ Arctic Silver 5 thermal paste & 80mm heatsink/fan
I have a (fairly new) 450w power supply & case

[I know I might have to manually set memory timings in bios
and might have to up the voltage a little for both cpu & ram]

. . .so, after I install the new video card
and get it running w/ updated drivers and all,

I'll then install the new Dual Channel DDR 400 Ram ~

~ ExtremeOverclocking; (http://forums.extremeoverclocking.com/showthread.php?t=138046)

. . .start out with a low multiplier (such as 8 or 9) first to find the maximum FSB. set multi and then FSB in 3-5mhz increments and then booting and testing overclock stability.

"Once you have hit a wall (computer freezes or testing shows your unstable) go back and raise the vcore to your CPU. Once you have found the absolute maximum FSB you can go back and start upping the multiplier in .5 increments. Same idea applies, once you fail, freeze or can't boot raise the vcore until you can. The maximum voltage you want to be running if you have aircooling is 1.95V (in Windows). Also, a common overlook is the locking of the AGP/PCI frequnecy @ 66mhz."

"On AMD systems; set the vdimm to 2.8V and loosen the timings to 3-4-4-11 to make sure RAM isn't hindering overclock. Once you have found the highest FSB go back and start lowering your timings, as tighter timings result in faster speeds. The best possible timings are 2-2-2-5 but don't be worried if you can't achieve these. For some reason, the nForce2 chipset likes the final number in the RAM timings to be 11 instead of 7-10. If you hit a wall with your RAM, you can increase the voltage to 2.9V, which is the max most mobo's."

. . .or should I keep the 11x multitpler and start at, say ~ 170Mhz fsb, then increase by 5Mhz 'till I max it or get it close to the 200Mhz fsb (400 FSB) ~ raising Vcore to 1.675v
and loosen mem timings to 3-4-4-11 & Vdimm to 2.8v ~ 'till fsb is set ~ then tighten timings. . .???

Any help and/or comments would be appreciated ~ thanks

01-23-06, 08:29 PM
If you want to overclock and get some good timings, I would recommend some high quality OC ram.

I run my ram at 3.0v, I find that to be the optimal voltage for most speeds. It doesn't hurt your ram. One thing though, make sure you have a GOOD powers supply. Some cheap $50 500w one wont cut it.