Core 2 Duo E6400 Overclocked to 3.33 GHz

abs · Post by **abs** » 14 Oct 2006, 13:44

Cant wait to get my hands on a core2 e6400, btw the Gigabyte's 3D Galaxy II liquid cooling solution didn't perform to bad.

http://www.tomshardware.com/2006/10/10/cheap_thrills/

kraven · Post by **kraven** » 18 Oct 2006, 22:54

just overclocked a friends e6400 to 3.0GHZ... stable after looong Prime95 torture test! i should get some pictures...

-UNSTABLE- · Post by **-UNSTABLE-** » 17 Nov 2006, 19:13

kraven did you overclock the valu ram and did it let you overclock your cpu nicely? Think i could get 3.0ghz with corsair value ram?

Bobendren · Post by **Bobendren** » 17 Nov 2006, 19:19

The CPU overclock isn't affected by the ram. With better ram you may be able to run it at a 1:1 ratio, but the actual speed increases are minimal -only a few percent.

That said, i'm also curious as to how far corsair value select can be overclocked.

-UNSTABLE- · Post by **-UNSTABLE-** » 17 Nov 2006, 19:26

So would be worth me getting value ram to overclock until i can afford more expensive ram?

-UNSTABLE- · Post by **-UNSTABLE-** » 17 Nov 2006, 19:29

what frequency ddr2 do you have? kraven, would it be worth me getting ddr2 533?

LordRage · Post by **LordRage** » 17 Nov 2006, 22:57

Bobendren wrote:The CPU overclock isn't affected by the ram.

Actually with the 965 chipset, it is. you can only OC 1:1 or make the mem a higher frequency than the CPU, you CANNOT use mem dividers for a 5:4 ratio etc etc.. So you need mem that can do higher clocks, ie DDR2 667/800 etc. If you dont want mem to be the limiting factor, then get a 975X chipset, then you have dividers

Bobendren · Post by **Bobendren** » 17 Nov 2006, 23:12

LordRage wrote:
Bobendren wrote:The CPU overclock isn't affected by the ram.
Actually with the 965 chipset, it is. you can only OC 1:1 or make the mem a higher frequency than the CPU, you CANNOT use mem dividers for a 5:4 ratio etc etc.. So you need mem that can do higher clocks, ie DDR2 667/800 etc. If you dont want mem to be the limiting factor, then get a 975X chipset, then you have dividers

Eish, I didn't know that. Are there any plans to implement it with future bios releases?

[cartman_voice]That's so freaking lame![/cartman_voice]

LordRage · Post by **LordRage** » 18 Nov 2006, 09:03

not sure to be honest. But that is why I got the Asus P5W DH Deluxe, cos it is a 975X chipset. However if you are buying RAM, then the Transcend JetRAM DDR2 800 from Rectron is the same price as 533 and 667, so its worthwhile just getting the faster RAM.

-UNSTABLE- · Post by **-UNSTABLE-** » 18 Nov 2006, 09:36

Have a link?

LordRage · Post by **LordRage** » 18 Nov 2006, 10:03

http://www.jetram.com.tw/ would be the 1st place I look, but you will have to google for it. At systemshock someone got the sticks to DDR2 900.

abs · Post by **abs** » 18 Nov 2006, 10:46

For people that dont no what mem dividers is including myself here's a little article i found on extreme systems. I would love to try and overclock but the prescott's multipliers are locked so i wont bother.

Anyway here's the post.

Here's a handy guide I wrote with an enclosed tool to help calculate different ram speeds and cpu clock speeds using different memory dividers and multi's. Big thanks to goddh0r for writing A64 MemFreq 1.1 Program!

A ram divider is usually a setting found in your ram tweaking setting menu in your bios. dividers usually are 200(1:1), 166, 150, 133, 100 or 400, 333, 266, 200. etc..
The lower you go on the divider, the less ram speed is used. The whole point of a divider is if your memory can't keep up with your fsb. say you have an a64 3200+ that does 2.5 ghz. you would normally do 250x10 ram 1:1 (ram 250 also) 1:1 HTT=ram speed 250=250.

but in your case you have ram that won't do 250mhz, so you need to use a divider. Download this zip file and type the HTT(fsb) in the top line and go from there. This will help you find your sweet spot. You can use it to help calculate your ram speed and total cpu clock by using different dividers and cpu muti's. AMD64 multi's are unlocked downwards. so if you have default multi of 10, then you can use 9, 8, 7, 6, 5, don't go below 5. In the case of an FX, the multi is unlocked both ways.
Just think of your cpu max clock and your ram's max clock and find the best way to utilize the most from each.

ex. Joe has an athlon 64 that does 2.53 ghz. stable. but his bh6 ram only goes up to 232mhz at 2-2-2-6 1T. what does Joe do? he does this: set's the cpu multi at 9. sets ram divider at 166. sets his HTT(fsb) at 280. bingo! Joe's cpu is now doing 2.52ghz(9*200) and his ram is doing 229mhz!

Here's another example: Steve just shelled out $250 on some new TCCD that does 284mhz at 2.5-3-3-7 1T. He has a crappy 3500+ that only does 2.58 ghz. Steve assumes that because his cpu only does 258x10, his ram will have to run at 258 too. But Steve wants to use all that bandwidth of his tccd, but doesn't want to go over his cpu speed. So what does Steve do?
Steve set's his multi to 9 and runs his ram up to 284 1:1. Now his cpu is at 2.55(9x284) and his ram is ripping at 284mhz like it should! Steve is very happy and he is glad he spent the money on his new ram.

GENERAL RULES ON A64:
Remember, never use .5 multis, never use multi under 5. For best performance use 1T command setting(I've found 2T command is about the equivalent to a 20mhz loss in memory performance)

IMPORTANT!!!
Depending on your A64 chipset your total HTT(fsb) and HT multi(2x, 3x, 4x, etc.) should never exceed the total hyper transport link speed. ex. NF3 250 ultra has max of 1000mhz hyper transport link. So if fsb is 290 and htt is at 5x(200*5=1000) 5x290=1450 BAD!!!
to fix. just lower the HT multi(hyper transport Link) to 3x(200*3=600) so 3*290=870 total hyper transport speed. GOOD! you kept it under 1000!

In the attached zip file. enter your fsb(htt) in the First line at the top.

If you interested in the little program you can download it from extremesystems.org
http://www.xtremesystems.org/forums/showthread.php?t=49898

The program look like this