DJManiac Posted June 7, 2006 Share Posted June 7, 2006 I purchased only few days again TwinX2048-4400PRO for my P4C800 Deluxe, after I checked that they are listed as compatible with my MB. But I can't reach the FSB of 275. My Settings Ram-Timings: 3-4-4-8 CPU: 2,4Ghz @ 3,3 Ghz (and FSB 267 @ 3,2Ghz) MB: ASUS P4C 800 DELUXE - BIOS 1021.005 RAM: 400 (1:1) AGP/PCI: 66/33 Power: Antec TruePower 2.0 550WATT GPU: HIS X800 XT PE VCore: 1,585 (tested also 1,6) Vmem: 2,75 (tested also 2,85) VAGP: 1,60 (tested also 1,70) Watercoled: CPU & NB Loaded also Biosdefaults and set USBLeagcay, Spread Sectrum, MIDI: off (had read this here in this forum) After testing for many hours with Memtest86+ I found out the following (only the important tests - tested many more settings): 1.) Stable: FSB 267 (DDR534), RAM 400 (3-4-4-8) - Memtest: 3 Passes 2.) Failed: beginning FSB 268 up to 275 (DDR550), RAM 400 (3-4-4-8) - Memtest: Stops at beginning of Test 5 everytime!!!! 3.) Stabe: FSB 275 (DDR440), RAM 320 (2,5-3-3-7) - Memtest: 3 Passes As you can see my CPU does FSB 275 @ 1,585 VCore, so I belive its not a limitation of my CPU or MB. Are my setting not OK??? Or has my MB a Problem with those RAMs??? Or should I use an other BIOS Rev.??? Many thanks for your help! DjM Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted June 7, 2006 Corsair Employee Share Posted June 7, 2006 Actually the MB you have is probably just topping out, as thats about the same reseults we got with that MB. But I would test the modules one at a time to be sure. We have to screen about 60 MB's we use to get 10 that will run at that speed and we use the P4C800-E Link to comment Share on other sites More sharing options...
DJManiac Posted June 7, 2006 Author Share Posted June 7, 2006 So I will wait for an message from you regarding this... Many thanks for your fast reply!!! Top Support here! DjM Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted June 7, 2006 Corsair Employee Share Posted June 7, 2006 I dont understand? What message? Link to comment Share on other sites More sharing options...
DJManiac Posted June 7, 2006 Author Share Posted June 7, 2006 But I would test the modules one at a time to be sure. Sounds to me that you wanted to test a module again, to find an working for me. May be I understand you wrong... sorry. So there is no solution for me??? But why my MB is then listed as "recommended" for this Twin2048-4400PRO? Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted June 7, 2006 Corsair Employee Share Posted June 7, 2006 Not every MB will be able to run these modules even if you have the same MB and CPU as we use to test, Like I said we have to screen the MB's to get a few that can run at these speeds. From what you have posted it sounds like its your MB topping out not the memory, but I would try and test your modules one at a time to be sure one is not failing. Link to comment Share on other sites More sharing options...
DJManiac Posted June 9, 2006 Author Share Posted June 9, 2006 OK... understand you right now... sorry for my misunderstanding... Will test both modules individually and let you know about the results... I found out also thats NOT a Bios Rev. problem. Tested yesterday P4C800 1019 (last non Beat Rel.) and the original on CD-ROM (1011.007?)... Same behavior as with newest 1021.005 (Beta) Bios.... Do you have a hint for me which P4 Sock 478 Intel 875 Board will do FSB 275 (or more) without any Problems with TwinX2048-4400PRO Rams? Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted June 9, 2006 Corsair Employee Share Posted June 9, 2006 The first revision of that MB P4C-800 and the P4C-800-E will usually run at 275 Mhz, but like I said we go thru about 60 MB's to get 12 that will run stable. Link to comment Share on other sites More sharing options...
DJManiac Posted June 12, 2006 Author Share Posted June 12, 2006 Last week I tested both modules individually with surprising result: If I install only one (1GB RAM) (Single channel) Memtest pass Test 5 and all other tests also with FSB 275!! This one works! :biggrin: Tested the other Stick with the same result. It runs also with FSB 275! But if I install again both (dual Channel) Memtest stopp at Test 5 between (3-10%) :sigh!: This sounds for me that my MB has a Problem with the high Memorybandwith in DualChannel-Mode???!!!! Or is it possible that my MB gives not enoght VDIMM if I use the 2 RAMS??? Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted June 12, 2006 Corsair Employee Share Posted June 12, 2006 I would try and increase the CPU and memory Voltage and see if it helps. Link to comment Share on other sites More sharing options...
DJManiac Posted June 13, 2006 Author Share Posted June 13, 2006 :-) Ramguy, do you really believe that I do not tested the voltages again and again? Please see my first post... Listet there my tries! I tried 2,75 and 2,85 VDimm (more is without VdimmMod or OCZs Ram Booster not possible) and also VCore 1,585, 1,6 and 1,625... I dont think that VCore ist the problem because my system runs stable FSB 275 and more with 1,585 VCore and RamDivider 4:5 (320 instead of 400) in Bios.... And as I already said they do FSB275, but only in SingleMode. I know that it is normal das DualChannelRams do a bit more FSB in SingleMode than in DualChannelMode. They do so on evey MB. But my Ram dont do the FSB275 in DualChannel as specified. So I really think that the Ram is here my problem.... I am not a totally newbee in OCing! Before the TwinX4400Pro I had OCZ EL DDR PC-4400/550MHz/GoldEdition/DualChannel/LimitedEdition/1024MB.... Sold it via Ebay: http://cgi.ebay.de/ws/eBayISAPI.dll?ViewItem&item=6881102990 And this Ram runs perfectly with FSB 275! And this with "only" 2,85 VDimm (although they are specified for 2,85 - 3,15V).... Another point that my MB ist not limiting! I really hope that there is a possibility that I can change my Sticks with working ones.... EDIT: OK - understand that u dont whant to see other ram-makers here....nevertheless.... Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted June 13, 2006 Corsair Employee Share Posted June 13, 2006 What you have posted would suggest its not the memory, but I have no problem replacing your modules, please use the On Line RMA Request Form and we will be happy to replace them or it Link to comment Share on other sites More sharing options...
DJManiac Posted June 14, 2006 Author Share Posted June 14, 2006 Thank for your reply... I ask another friend of mine. He has an up to date AMD system (with ajustable muliplier) with 100% working FSB280... I ask him to check my RAM... But this will last about 1-2 Weeks... If the RAM fail also on his system I use the RMA Request form you send me.... Otherwise its really my system, and I will live with my FSB 267 :sigh!: many thanks for your help - will let u know about the results... ;): DjM Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted June 14, 2006 Corsair Employee Share Posted June 14, 2006 No problem and yes please do let me know! Link to comment Share on other sites More sharing options...
DJManiac Posted June 15, 2006 Author Share Posted June 15, 2006 The first revision of that MB P4C-800 and the P4C-800-E will usually run at 275 Mhz, but like I said we go thru about 60 MB's to get 12 that will run stable. sorry - again a short question... Do you mean that P4C800-E Rev. 1.02 runs better than Revision 2.00? Of coures not in generall - only what to hear your oppinion... Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted June 15, 2006 Corsair Employee Share Posted June 15, 2006 Rev 1.02 will top out higher in out lab tests. Link to comment Share on other sites More sharing options...
DJManiac Posted July 6, 2006 Author Share Posted July 6, 2006 No problem and yes please do let me know! Hey Ramguy! As I said few weeks ago here my report: First of all: I'll keep my ram! No need of replacement... A friend of mine tested the ram also and said that it is OK. On my system (P4C800 DLX Rev.2.0) I found out that the RAM works better with less (yes less) VDIMM and harder timings... strange but it works... Also found out that clear CMOS completely(Battery away for a minute) will help.... Here my final settings (Prime95, Blendtest, 100% stable for 6 hours): P4C800 Deluxe Rev.2.0 P4 2,4Ghz @ 3,2Ghz with FSB267 VCore 1,585 (only) FSB:RAM: 1:1 CASLat: 3.0 RAS/CASdel: 3 RASPre: 2 Tras: 5 VDIMM: 2,75 Watercooling on CPU and NB. SiSandra RAM bandwidth: InALU/FloatFPU: ~6300/6300 Its incredible that these 2x1024 MB RAM will do these timmings! Well done... Thanks again for your help! Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.