4GB RAM overclocking

dousland70

dousland70

dousland70

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Joined
4 Feb 2007
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Location
Plymouth, UK
Hi

I currently have 2GB Geil ULL 6400 DDR2 ram installed using Vista ultimate 64bit

I have just purchased a Q6600 GO plus an additional 2GB Geil ULL 6400 but will this make a difference to overclocking with 4 GB ? ive heard that 4GB dosent overclock as well

This is my current spec :

Vista Ultimate 64 bit
E6320 OC'D at 3.2ghz
Geil 2GB ULL 6400
BFG 8800GTX

Thanks in advance
 
I just got another two sticks of this RAM, previously i was able to get 1000mhz out of the two sticks, now im having difficulty at 900mhz, i wasnt aware of this :\
 
Give either the memory or the chipset voltages a nudge.

Tho you shouldn't need even 900mhz for a Q6600.
 
Cob said:
Give either the memory or the chipset voltages a nudge.

Tho you shouldn't need even 900mhz for a Q6600.
Click to expand...

Would you say then it's better to have a faster Q6600 clock than a faster mem clock on DDR800 ram?

EG:

Which one of these would be better (from a gamers POV)

1: Q6600 @ 2.7GHz and DDR800 ram @ 750MHz
or
2: Q6600 @ 2.6GHz and DDR800 ram @ 950MHz
or
2: Q6600 @ stock (1066fsb) and DDR800 ram @ 1066mhz


I would ideally like the CPU to be +2.7GHz with the RAM faster with a close ratio but it's unstable at high clocks with the cpu clocked as well and increasing the voltage makes my B3 run hotter so I choose a mild OC only.
 
CPU speed definitely trumps RAM speed but i still like to know what my pc's components can do when running close to the edge :)

I think i've managed to get 950mhz stable by changing the mysterious RAM overclocking setting on my Gigabyte board to Option 2, i'll probably drop this down to 900mhz for long term use.

WD
 
According to CPUZ SPD table my ram can do 4-4-4-12 at 533 mhz but there's no reason why XMS ram can't do CL4 @ above that speed eh? ALmost time to test!
 
just been testing new drives and psu with the memory i already had in, some early gskill micron stuff that did ok. on the dq6 gigabyte board and a b3 q6600 i could do 3.6Ghz easy, put first two sticks of ballistix pc6400 in and had no trouble running at ddr1200 at all, 5,5,5,15. around 8400mb/s sisoft bandwidth though i've read and seems likely that vista using mem so hard affects sisoft mem scores pretty massively.

i was messing around with the first pair trying to find 4,4,4,15 max speeds, and getting above 1200mhz, can boot consistantly but not make it into windows at 1350mhz, though with 2.25v, so more juice and i'm sure i could break 700mhz with the first pair. stuch the second pair in aswell and am at 550mhz 5,5,5,18 off the first boot. i'd messed around so thats just where i was at last.

bandwidth scores are limited, i could only get 1200mhz with 400mhz fsb and a higher multi, as the drop in multi means i basically can't hit 1100-1200mhz because board/cpu just will not go to 500mhz fsb. i've tried with 500mhz at 7 and 6 multi and neither seem to be able to boot at all. not sure if its board, chipset, cpu mhz limit.

you notice with higher Mhz memory and slower fsb, like 400mhz fsb and 1200mhz, i got less performance than at 450mhz bus, but only like 1050 on the memory. its because the cpu's bus is important. so the ideal is to go for the very highest fsb your cpu is capable of, then find a reasonable comprimise somewhere around that fsb limit for cpu multiplier, fsb, memory speed. so far the cpu's still completely stable at 3.6Ghz. so far its made next to no difference having the extra 2gigs in. £52 for each 2gb pack aswell. i'm happy.
 
n3crius said:
Is it worth considering a more expensive 2x2 options over 2x(2x1) when overclocking the Q6600? I'm currently still thinking about two sets of this http://www.overclockers.co.uk/showproduct.php?prodid=MY-072-OC if it doesn't hold things up using 4 sticks?
Click to expand...

Not really. Four 1gb sticks won't hold back a Q6600, especially when they will clock further than 2x2gb.

At the current price of the 2x1gb OCZ (£43) it's really a no-brainer.
 
yup, theres basically, afaik from quick looking around, no one doing 2x2gb with decent overclocks. the sticks are stupidly expensive and definately do not clock as well as 1gb sticks, even 4 of them. i've heard people saying basically the few 2gb sticks that can overclock do so very poorly. i've so far seen very little difference in overclocking 2x1gb vs 4x1gb. unless you're planning on getting 8gb's then theres not a single reason to get 2gb sticks at all.
 
on my p5k deluxe it limited my stable overclock by about 200 mhz, however on my dq6 it doesnt affect it at all having 4 sticks of ram
 
I thought i'd managed to get my ram stable at 900mhz but i was wrong, after reading around i found that four sticks puts more pressure on the northbridge (makes sense now i think about it).

So anyway ive bumped my northbridge up to the max and im stress testing at 960mhz and so far so good :)

WD
 
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