RuneRuler Posted August 3, 2005 Posted August 3, 2005 I have a question - and i hope it not adressed in a different post. ( I did search) I`m in the process of upgrading to Nforce 4 and 7800GTX. I Have 4 sticks of CMX256A-3200LL - they have served me well, and are truly high quality Ram! BUT! I did run into an issue with my old Nforce 3 MB, as it could not run 4 sticks at 1T command rate. My question is simply; Will I have the same problem using these 4 sticks in my new DFI LANPARTY UT nF4 SLI-D ?? Thank you in advance!
Corsair Employee RAM GUY Posted August 3, 2005 Corsair Employee Posted August 3, 2005 Yes, you will have this same issue with any 4 modules, this is a limitation of the memory controller in the CPU. If you install more the 2 double ranked modules the memory controller will down clock to DDR333 and be limited to 2T command Rate.
RuneRuler Posted August 3, 2005 Author Posted August 3, 2005 Ahhh thank you for the prompt and informative answer! Seeing that you are so fast and service minded, ill try to sneak inn a follow up question before i scuttle off and register in the AMD forum.... :) So this is caused by the mem controller in the AMD, then... Is it something that will be fixed in future revisions ( Venice?) I.E. Is it a "bug" or is it an innherent problem with the CPU Architecture ?? .... And thank you Kindly (again) /Rune
Corsair Employee RAM GUY Posted August 4, 2005 Corsair Employee Posted August 4, 2005 Well yes and no! This is nothing new and is this is a limitation with all un-buffered chipsets/memory controllers. I would suggest you watch the Memory Basics Presentation for more information, as this is common. And yes the newer cores will be able to run at DDR400 with 4 modules, but they would still be limited to 2t Command rate and you may have to relax the timings to make your system stable.
RuneRuler Posted September 25, 2005 Author Posted September 25, 2005 Ok so i took your advice to heart and recently purchased CMX 1024 3200C2 dual 2 GB set. But it seems my DFI UT NF4 SLI-D is not on friendly terms with these.. I have tried different bios revisions, and volt settings rangeing from 2,6 to 2,9 Relaxed all ram timings but any OC will result in an instant hard reboot. Stock they run fine. My new venice runs like a charm on 250 x 10 - 2500 mhz with a * Cough * different set of ram modules, but seeing as i was so happy with my old modules and the fantastic support i got here i again opted for Corsair when i wanted to upgrade to 2 GB. From what i have found there is a Bios for the DFI which will alow me to OC these modules, but this bios ( 702 ) contains a bug that enables you to fry your CPU so im reluctant to try this. Is this an issue you have any intelligence on ? As ususal, any help is greatly apreciated!
CMC_SAVAGE Posted September 25, 2005 Posted September 25, 2005 You may want to repost in the Enthusiasts Only Forum. Corsair only guarantees the rated timings and speed which you say work fine. Any OC'ing is up to you and the results can't be guaranteed.
RuneRuler Posted September 25, 2005 Author Posted September 25, 2005 You may want to repost in the Enthusiasts Only Forum. Corsair only guarantees the rated timings and speed which you say work fine. Any OC'ing is up to you and the results can't be guaranteed. I beg to differ, there is no doubt that there is an issue either with the ram or the MB/Bios as the ram obviously will allow some headrom for OC. I will however have no alternative but to accept a "no support" answer to my post on the grounds you outlined - but that will only result in me returning the Ram to my dealer and not use Corsair! And we can`t have that can we :roll: All i was asking is if this is an issue the eloquent and informed Ram Guy(s) has any knowledge about - My sole intention is to stick with Corsair!
CMC_SAVAGE Posted September 25, 2005 Posted September 25, 2005 Perhaps you read somthing else into my post. This forum is for Compatibiliy Questions. No one is saying that the RAM can't or won't OC, but there is a specific Forum setup for this purpose only. All your questions will be answered and supported in this forum. Sorry if there was a misunderstanding.
Wired Posted September 25, 2005 Posted September 25, 2005 All i was asking is if this is an issue the eloquent and informed Ram Guy(s) has any knowledge about Do you mean that you're asking if your memory not being able to run above rated specs is an issue?
RuneRuler Posted September 25, 2005 Author Posted September 25, 2005 Do you mean that you're asking if your memory not being able to run above rated specs is an issue? Jepp or to rephrase; Does anybody know why i can`t OC 1 mhz with this MB/Ram I.E. what is Causing this ? Im thinking Ram revision, or MB Bios. Or a combo(?) CMC_Savage: Im sorry if i came across sounding a bit rude, not my intention ( im Norwegian so we`ll put it down to a language barrier) but the reason i choose to post here was that as far as i understood, this is a forum supported by the Corsair Crew, but the Enthusiasts forum is not.
Wired Posted September 25, 2005 Posted September 25, 2005 Jepp or to rephrase; Does anybody know why i can`t OC 1 mhz with this MB/Ram I.E. what is Causing this ? Im thinking Ram revision, or MB Bios. Or a combo(?) CMC_Savage: Im sorry if i came across sounding a bit rude, not my intention ( im Norwegian so we`ll put it down to a language barrier) but the reason i choose to post here was that as far as i understood, this is a forum supported by the Corsair Crew, but the Enthusiasts forum is not. Correct about the forums, however also keep in mind they don't support OCing either, so their response would be the same regardless of where you posted.
CMC_SAVAGE Posted September 25, 2005 Posted September 25, 2005 Apology accepted........ :biggrin: The reason I suggested the Enthusiasts Only forum is that alot of people who are knowledgeable and into OC'ing post there. To add to what Wired said, this forum isn't "officially" moderated for obvious reasons. Any time you push a piece of hardware (CPU, RAM, Video Card, ect) beyond the rated specs, there is always the possibility of damage and shortening the products lifespan. The fact that Corsair even has this forum is pretty cool. You'll never get the "official" word (advise or instructions) on OC'ing your RAM but there are alot of members who you can get some tips from.
RuneRuler Posted September 26, 2005 Author Posted September 26, 2005 MMm ok Thank you for the input Guys, if what you say is true im afraid ill have to swap these for insert_non_Corsair_Brand here, and i was hopeing to avoid that... Im hanging for a few days in the hope that this is a known issue and that someone will point me in the directon of a fix.. Oh well,meanwhile off to bed, gotta work in 6 hrs! :eek:
RuneRuler Posted September 26, 2005 Author Posted September 26, 2005 Define KNOWN ISSUE again. Good example in a post not very far from this " Yes, you will have this same issue with any 4 modules, this is a limitation of the memory controller in the CPU. If you install more the 2 double ranked modules the memory controller will down clock to DDR333 and be limited to 2T command Rate." This is in my book a known issue, ( is my english that bad ?) So a known issue in this question could be; "These modules rev a, are known to not OC with DFI, if you however aquire rev b, you should be more successful" Allthough this is a stimulating thread, i feel its more semantics then sollutions - I still mean no offence to anybody, im just hoping for some enligtenment as to why i cant get these sticks to perform "slightly" out of spec!
Wired Posted September 26, 2005 Posted September 26, 2005 Good example in a post not very far from this " Yes, you will have this same issue with any 4 modules, this is a limitation of the memory controller in the CPU. If you install more the 2 double ranked modules the memory controller will down clock to DDR333 and be limited to 2T command Rate." This is in my book a known issue, ( is my english that bad ?) So a known issue in this question could be; "These modules rev a, are known to not OC with DFI, if you however aquire rev b, you should be more successful" Allthough this is a stimulating thread, i feel its more semantics then sollutions - I still mean no offence to anybody, im just hoping for some enligtenment as to why i cant get these sticks to perform "slightly" out of spec! The 4 stick thing is just because of the design of the earlier A64 memory cores and will happen with any memory. There's no issue with your 2x1GB pack, you just got some "bad luck" and got a pack that will "only" run @ spec. There's no guarantee from any manufacturer about any memory part # or revision # that their memory will overclock. If you want 250 Mhz memory, you'd need to get DDR500 memory.
RuneRuler Posted September 26, 2005 Author Posted September 26, 2005 Agreed, all your arguments are sound and true - And i will excersise my right to return these and try a more flexible brand. Case closed, and thank you for all your valuable input!
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