Which DDR3 memory can run at 2.0GHz effective speed?
- Thread starter Big.Wayne
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I'm not sure if I'm reading that right or perhaps I'm not aware of the differences between an Intel and nVidia chipset but you can run memory at several different speeds different from the CPU (async) on a INTE chipset. I've often seen (nVidia chipset) posters refere to *unlinked* memory but assumed it was just different slang for async?
Can you literally just dial-in any memory speed on the nVidia boards or?
Thanks for the reply although I'm not sure if I can assume 3rd party information to be true!
(you should no me by now!). If you had tested it yourself I would take that as almost gospel! 
So I will have to be less distracted and get off my lazy *** and do some reading although as always there are contradicting views, w3bbo says DDR3 can only run up to 1.5GHz/1.6GHz in a DDR3 P45/Intel® Core™2 machine and Rich Weatherstone reports 1.8GHz/1.9GHz is possible!
Anyway great replies all, I really didn't know much about DDR3 before this thread so thanks for the links and pics.
If I get some spare time (and money) I may pick up a DDR3 based P45 board and a £100 DDR3 kit that has a chance of hitting 2GHz and have a play!
On my current nvidia chipset board, I can set any RAM freq I want, and it will automatically round it off to the nearest whole ratio, say I have the FSB at 400 for example, if I put in 485 RAM freq, it will auto round off to 480 and be 5:6
Can do all kinds of crazy ratios though like 5:17 and stuff
Currently sitting at 8:9 actually
Can do all kinds of crazy ratios though like 5:17 and stuff
Currently sitting at 8:9 actually
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Webbo, thinking of getting some DDR3-1800 at 8-8-8-24 2.0v, how much do you think I could slacken the timings to
You seem to the man who knows
Do you mean tighten or are you getting confused with the bandwidth?
1800 might overclock further (bandwidth) by slackening the timings or you could lower the bandwidth and perhaps tighten the timings.
Say:
1900@9-9-9-24
or
1600@7-7-7-21
You might be able to do both but it depends entirely on the memory chips themselves.
Oooh yea sorry I meant tighten without changing frequency, if possible.
Or would it be better to just leave the timings alone and try to push more mhz out?I dunno I'm noob at DDR3 8-8-8-24 sounds mega slow when I'm used to 4-4-4-12 RAM
I'm not sure if I'm reading that right or perhaps I'm not aware of the differences between an Intel and nVidia chipset but you can run memory at several different speeds different from the CPU (async) on a INTE chipset. I've often seen (nVidia chipset) posters refere to *unlinked* memory but assumed it was just different slang for async?
Can you literally just dial-in any memory speed on the nVidia boards or?
Thanks for the reply although I'm not sure if I can assume 3rd party information to be true!
So I will have to be less distracted and get off my lazy *** and do some reading although as always there are contradicting views, w3bbo says DDR3 can only run up to 1.5GHz/1.6GHz in a DDR3 P45/Intel® Core™2 machine and Rich Weatherstone reports 1.8GHz/1.9GHz is possible!
Anyway great replies all, I really didn't know much about DDR3 before this thread so thanks for the links and pics.
If I get some spare time (and money) I may pick up a DDR3 based P45 board and a £100 DDR3 kit that has a chance of hitting 2GHz and have a play!
The Nvidia boards can run the memory 'unlinked' from the FSB. While yes, you can just dial in the frequency you want the ram to run at, the ram does not truly run unlinked, it's just the Nvidia chipset have loads more dividers than Intel so the ram will be rounded up or down to the nearest denomination, which is usually pretty close to what you input.
W3bbo and Rich Weatherstone are one and the same m8
. You asked about P45, and for P45 at stock volts, the max I have been informed was about 1500/1600 before the ram became unstable. HOWEVER, the same DDR3 kit reached 1896 on an Intel Chipset (x48 iirc) but was not stable and needed excessive volts (not for 24/7 use) - which information do you suppose I should have given? .Oooh yea sorry I meant tighten without changing frequency, if possible.
I dunno I'm noob at DDR3 8-8-8-24 sounds mega slow when I'm used to 4-4-4-12 RAM
I tend to see how far I can go with both settings then find a happy medium.
Try both different settings yourself and see which benefits you the most.
No, EPP (Extreme Performance Profile) will automatically adjust timings AND voltage to the correct level. This works like an extension to the standard 'bootable state' SPD settings. I wouldn't value EPP tbh, it's a nice addition but its something you can do yourself 2 minutes into the BIOS.
Read this thread about the P5Q3 series: http://www.xtremesystems.org/forums/showthread.php?t=191848I'm looking at LGA775 systems that use DDR3 which It seems can actually use up to 2GHz DDR3.
It's the P5Q3 above that caught my eye, sells cheaper than a DDR2 based P5Q-Pro and can run DDR3 at 1800MHz, maybe even 2GHz which seems very nice!
Of course DDR3 is expensive still and I'm just curious to see how Intel® Core™2 processors work when you give them massive memory bandwidth . . . I could probably only afford a 2GB kit with nice timings or maybe a 4GB kit but CL9!
Released in June, they still havent got the boards running properly at 1600Mhz let alone 2000Mhz
7 months & 90 bios updates later & it's still not worth using even as an ironing board lol. I love Asus I really do lol!!!