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I've heard somewhere that if you use 4 sticks of DDR400, then the memory will only run @ 200mhz. Is this correct or I am dreaming or rather having a nightmare? :) :crazy:
EDIT: Ah ha, i saw it @ Scan!
First Question @ the bottom
Lol, I dont get the answer which the guy replied, can anyone explain this?
Quote:
Answer / Solution
It's all down the DDR. 400Mhz is 200Mhz DDR ie x2. The BIOS is showing the actual FSB - set it to SPD and leave it.
They don't know what their talking about. Intel chipset? Too funny.
Depending on the chipset and CPU you probably don't want to run 4x512 if you can avoid it. This is an especially bad idea on an A64 board. Use a 2x1024 kit if you just have to run 2GB, especially on an A64 that you plan to overclock a bit.
I've had reasonable performance from 4 single-sided DIMM's but 4 double-sided is a no-no on A64s.
Basically the guy you quoted was just saying to set the RAM timings to auto and SPD. He really didn't understand the question that was being asked. The guy asking the question obviously doesn't understand the BIOS settings of the K8N Neo2 and wants to know why his motherboard is running his 4 DIMMs at 200MHz instead of 400MHz. The reason is whenever you populate all four slots on a Neo2 the motherboard slows the RAM down to a speed it knows the CPU can handle. It's a safety mechanism. The memory will probably run much faster than 200MHz but the user needs to play with it to see what it will do.
Enable 2T timing is fine. I tried 4 sticks I could do 2-2-5-2 fine. Didn't try FSB though.
2T isn't that bad tbh, the extra memory more than makes up for the slowdown of using 2T instead of 1T
So.....should i just stick on the safe side and get this
You can't overclock a lot from those Corsair Value Select, I do have 2 sticks of those, couldn't clock my CPU high even with the memory divider.
I dont really plan to overclock that much, I think my new system will be pretty quick anyway, 3700+ San Diego, Asus A8n-sli premium etc. :)
Try to get some with a lower CAS latendancy. maybe 2.5/2.0
In most cases it is VERY bad, but many people wouldn't realize a realworld difference. Then again, many would depending on their applications. I will say with A64s it's not that critical because if you run 2T you can generally get much higher memory overclocks which tends to offset the losses incurred by running 1t, but not completely. 1T is much better if you can do it.Quote:
Originally Posted by Meiapaul
If you are not overclocking 1T is a must IMO. ;)
So, to get this clear. I shouldnt get 4x512 sticks, and I should get the 2x1024? :)
In what way is that the safe side? That's the cheap side. If cheap=safe to you then I guess it is. You really need to ask yourself what you will be doing, and answer honestly. It may sound impressive to have 2GB of slow memory but it's not necessarily the best way to go for everybody.Quote:
Originally Posted by drunknmunky
So what will you be doing and how much money do you want to spend on RAM?
No overclocking, so I dont need such high quality ram. And lots of gaming. :)Quote:
Originally Posted by StormPC
Gaming benefits from high performance memory as much as overclocking does, and in some cases framerates can be substantially higher. 2GB over 1GB doesn't give any FPS increase but some games which are coded improperly run smoother on 2GB (at least I am told this by a few people).Quote:
Originally Posted by drunknmunky
In the experience of the serious gamers I've built systems for (and request feedback from) all of them tell me that 1GB with high speeds and tight timings beats 2GB of slower RAM everytime. These guys use state-of-the-art videocards (very important, because if you don't use a super fast videocard the memory won't matter at all) and play a very wide variety of games.
I suggest 1GB of high quality RAM over 2GB of rubbish. Of course you could buy 2GB of high quality RAM, but I am told by my testers that this doesn't affect most games at all.
Thanks for your advice.
Erm.....X850XT PE :)Quote:
Originally Posted by StormPC
I think I shall get this instead :) , as you said. 1GB of hi-quality stuff > 2GB of crap
Quote:
This memory has been verified to operate at 200 MHz (DDR400) at aggressive 2-3-3-6 latency settings on Intel CPU platforms, and 2.5-3-3-6 on AMD platforms.
Mine only runs at 166mhz, 4 x 512mb PC3200 with my MSI Neo2 Platinum.
Yes, and that lowers your bandwidth substantially. While there are a few cases where 2GB beats 1GB even with the lower speeds, those cases are extremely rare.Quote:
Originally Posted by alexander
drunknmunky,
That Corsair should do fine.
Well, 2-3-3-6 is not agressive at all. 1.5-2-2-5 is what you call agressiveQuote:
Originally Posted by drunknmunky
And then why not a Tras of 4, since you're running such a low CL?Quote:
Originally Posted by arthurleung
Ive had various problems running 4 sticks of DDR400 in my machine. In fact it has resulted in me now having 3 Kits of 2x512Mb DDR400 memory.
Basically ive been very busy on the DFI forums trying to establish why i can get any 2 sets to run. And it appears DFI boards do not like Corsair memory. So although i can install 4 sticks and the PC runs fine, the BIOS and Windows only recognises 1Gb, NOT 2Gb like it should.
So i have to move away from Corsair and buy something else. So i dont suppose anyone is interested in the following :-
2 Kits of Matched 2x512Mb Sticks - Cosair XMS TWINX1024 3200C2PT, which will run at upto 480DDR when combined with 2T and timings of 2-3-3-6, or 420DDR with 1T and timings of 2-3-3-6 both at volatages of 2.8V.
I also have a Matched 2x512Mb Stick Kit of OCZ Premier Series OCZ4001024PDC-K, which also managed the same timings as the Corsair Above.
If anyone is interested (and i know their is a particular section for this but i have not got 50 posts under my belt) then drop me a line at either pihrana@hotmail.com, or pihrana@nildram.co.uk.
Stick in some sensible priced PC3200 RAM like corsair value or crucial standard
either 2x512mb (1gig) or 2x1024mb (2gig)
2 or 4 sticks will operate at dual speed so you want 2 or 4 and not 1 or 3
There is this thing called command rate which is 1T fastest 2T not quite fastest.
With 2 sticks you can run 1T and with 4 sticks you must run 2T.
It all sounds so important but the performance differences are small I wouldn't worry about it tbh.
Keep your costs low as possible and build a new system more often with the money you save.
XMS C2PT isnt sooo bad, its a little old... but I could still run them at 2-2-2-5 at 2.8V at 200MHz.. its not as aggressive 1.5-2-2-4, but hey... its better than 2-3-3-6..
TBH, I wouldnt be bothered with the Tras, and besides, Tras of 9-11 has the highest memory bandwidth on my AMD 3500+..
Really ?Quote:
Originally Posted by StormPC
Bizarre as I had 2 x 512 Mb of twinX-XL PC3200 PRO and 2 x 512 Mb Xpert-XL 3200 running on an AMD 3500+ "Winchester" with no issues at all and running @ 200 Mhz ( 400 Mhz DDR )
I have heard that this can happen dependant on the chipset.Quote:
Originally Posted by WildmonkeyUK
Some people say that 4 x dual sided won't work on nVidia chipsets but will on VIA
Thats using the Asus A8N SLI deluxe motherboard.
I did say Some People
Quote:
Originally Posted by StormPC
Well 2GB in Battlefield 2 absoultely kills 1GB even at 166mhz.
The jump in performance must be around 50%, I am always the first one onto the maps and have to wait around 30 seconds for the others to arrive, no slow down at the start atall completely maxed out.
I'm Happy.
Made my decision, going to get 2GB(2x1GB).
These OK?
What speed will they run at on my Asus A8N-SLi?
They are the larger sized versions of the ones im using right now !! Apart from my issues relating to getting 4 Modules working in my DFI board ive had nothing but good solid Timings !!
Although 1Gb sticks always seem to need slighly more relaxed timings than 512Mb Sticks for what ever reason !! Either way they will be more than adequate and although in most instances you are better off with decent quality 512Mb sticks (1Gb Total) if you plan on playing BF2 then you MUST get 2Gb total as it will really benefit you !! Its such a resource hungry game that the pain of waiting minutes for a game to load the resources when using 1Gb is just the reason why its worth buying 2Gb !! Think of all the wasted time you'll save :P
Anyways, so is anyone interested in my Corsair or OCZ sticks. They will achieve 1T 2-3-3-6 timings @2.8V with 410 DDR or 2T, 2-3-3-6 timings @2.8V 480DDR for those who really want to push them !!
Ive just bought myself 4 sticks of the OCZ Value VX (Winbond Chips) which are simply the un-binned top of the line VX series of OCZ !! Cheap at approx £73 for a Gb !! Fingers crossed they work in my ever so touchy DFI board.
Thats another thing. Those interested in DFI boards. They are Awsome overclockers !!! No doubt about it. But Jeeeze are they touchy and sensitive to the smallest Hardrware/Settings !!