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Firstly, is it worth getting PC 3700/4000 DDR Ram? I have seen 2 x 512mb of Geil PC3700 DDR RAM for £200 delivered. I will be clocking my FSB at around 200 however depending on cooling I may take it higher. Would this RAM work with this mobo? It supports Dual DDR 400 RAM and all 3 slots can be used.
Would it be worth the extra money to get PC 3700 RAM or would PC 3200 RAM do? I am looking for the best RAM with the lowest latencys for high end gaming. Money isn't really an object so just fire away with your suggestions.
Cheers!
> Oh this old one about the Ram should run at the same front side bus of
> the cpu, this is not always the case, sometimes when you run the fsb
> of the memory faster than the fsb of the cpu the performance is
> actually lower but i have not found this on my own P4 rig, although i
> have found this on an athlon rig before, Also if you can have Dual
> DDR then get it as the bandwidth is more than just one stick (i.e 1 x
> PC3200 stick has a bandwidth of 3.2ghz but 2 x PC3200 Stick running
> in dual have a bandwidth of 6.4ghz), To change the multiplier the cpu
> will have to be unlocked which is easy to do on an athlon but not so
> on a P4.
Maybe not on a P4, but in a P4 overclock article by Toms Hardware they mentioned that computer performance is linked to synchronisation of the FSBs. Best thing to do is to run a bunch of benchmarks and see what happens. If you get performance increase stick with the settings, if not try RAM insync.
Yeah I have 2x512 PC3200 running in Dual channel. Well I think they are as they are in the right slots and the board is a Abit NF7-S. Anyway of checking if it is running in Dual channel?
Colin
> adrian wrote:
> FSB of RAM should also be linked to your CPU FSB. So if the CPU can
> only go 200mhz before you get problems then its best to keep the FSB
> of the RAM the same. PC3200 is 200mhz but can be overclocked
> depending on the RAM.
>
> The DFI boards let you change the multipliers, so CPU speed is
> independant of FSB.
Yeah most boards do. What I was saying is that the best performance for a PC is if the CPU FSB is the same as the RAM FSB. So I have PC3200 in my PC but due to the XP2800 running at 333 FSB the RAM is only running at PC2700 as its insync with the CPU FSB. I have tested the PC using the CPU at 333 FSB and the RAM at 400 and the performance drop isnt too much but there is a drop in performance instead of any increase.
Corsair XMS PRO 3200 DDR-DIMM 512MB CL2 32Meg x 8, 400MHz, with LED
that costs about £95 or
Corsair XMS PRO 4000 DDR-DIMM 512MB 32Meg x 8, 3-4-4-8, 500MHz, with LED is about £135
these come with lifetime guarantees, corsair is a quality company. If you have a window in your pc then the leds will stand out but if you don't then you could quite simply get
Corsair XMS3200LL DDR-DIMM 512MB PC3200 32Meg x 8, CAS 2-3-2-6-T1, 400MHz
which as you can see has very good timings to give uptmost performance however you;d be looking at about £99 for this stick of ram (which includes a heatsink).
From some research I have done on RAM I would say that when you are trying to get the best bang for your buck it is always a good idea to find out the timings of the stick, generally I have found that the timings are much better on the slightly slower sticks (PC3200)and therefore the performance can, in some ways, be better than a faster stick with poorer timings.