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Have a look at this thread ET: 9nda3j & TCCD 1T problem
__________________ EP-8KDA3J, 3000+ newcastle CG (230x10), 2 x 512 MB Ballistix, Audigy 2, Radeon 9800pro, CNPS7000A-AlCu cpu cooler, Tagan 480W PSU |
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Thank you for the link my friend. ![]() ![]()
__________________ Epox 9NPA+ SLI Venice 3200 @ 9 x 300 2 x 1024MB Mushkin blueline 5,2,3,2.0 (2t ![]() Raptor raid 2 x SATA 300GB Maxtor HDD's Enermax 600W Noisetaker PSU Geforce 6800GT Audigy 2. |
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Question: Is it better to run at 200 mhz and 2T or 166 mhz and 1T? I just set up my machine using an Epox 9NPA+ Ultra board with OCZ Dual 2GB (2x 1024) 3200 platinum DDR, and after forcing the BIOS to 1T and the stock speeds (2-3-2-5 at 2.6 volts), I noticed that it was booting up at 166 mhz (no errors in Memtest, though). I haven't yet tried forcing to 200 mhz, and after reading some of the problems other folks are having, I may not even bother. But I'm still not clear whether, from a performance standpoint, I'm better off leaving the BIOS at 1T and downspeeding to 166 mhz or easing back to 2T and letting the RAM fly at 200 mhz.
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From the posts I've seen, it only seems to be an issue with the Venice cores and also happens on the Epox NF3 9NDA3 variants. There's been no indication that Epox has looked at it or plans too :-( Definitely took away any temptation to upgrade my 3000+ winnie... Mike
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Hi, your OCZ memory uses the same infineon ic's as my Mushkin apparently. The only way to check to see which option is the fastest is to test it. I've haven't tested it but I decided to go with 200 MHz at 2t in the end. Apparently using 2t instead of 1t loses you around 20% memory bandwidth which results in a frame rate drop of about 4% in games. I really think this board just doesnt like 1t & in my opinion you will have a more stable system running 200MHz at 2t. Maybe epox are trying to fix this in the bios or maybe they know it can't be fixed. Either way they are keeping their lips sealed.
__________________ Epox 9NPA+ SLI Venice 3200 @ 9 x 300 2 x 1024MB Mushkin blueline 5,2,3,2.0 (2t ![]() Raptor raid 2 x SATA 300GB Maxtor HDD's Enermax 600W Noisetaker PSU Geforce 6800GT Audigy 2. |
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Jay T, thanks for info. It looks like the ~20% benefit of moving from 2T to 1T is negated by the ~20% drop in RAM speeds from 200 mhz to 166 mhz. Since I'm concerned about stability first, I think I'll use 2T / 200 mhz as well.
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Here's my solution to the 2T problem. Overclock the s#%t out of it! Still working on timings though. ![]() Apap
__________________ Epox 9NDA3J Athlon 64 3200 Venice Thermalright XP90 & Vantec Tornado (howler) 2x512 Corsair CMX PC3200xl TCCDs w Brainpower v1.2 2x Maxtor 80gig 8m cache IDE Raid 0 Radeon X800 xl 256mg Antec 400w PSU in Aluminum Midtower case 4 80mm case fans & fan speed controller |
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__________________ DFI LanpartyUT nF4 Ultra-D [BIOS N4LD406] AMD Athlon 64 X2 4200+ Zalman CNPS8700 LED Cooler OCZ (2 x 1GB) PC3200 Platinum Series EL-DDR [2-3-2-5] XFX GeForce 7800GT Extreme LED Edition [480/1200] Seagate Barracuda 250GB SATA II 16MB Cache Seagate Barracuda 320GB SATA II 16MB Cache Samsung CDDVDW SH-S203B Antec Sonata - TruePower 2.0 550W Samsung SyncMaster 172x ![]() |
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To blow a little light on the 1T issue. Hello, 1T and 2T Command Rate, also known as CPC or Command Per Clock, is a motherboard timing not a memory timing. 1T/2T commands indicate how the system clocks are allocating the timings of a command to the system. 1T = 1 clock cycle and 2T = 2 clock cycles. On average there may be a performance difference in between 7-10% (depending on who you talk to, platform being run, benchmark used, etc) 1T/2T Command Rates can be setup differently based on manufacture, motherboard, processor type (Intel Vs. AMD) etc. At higher speeds, drivers, board layouts, chipset requirements all can add up to the system performance overall. Changing the 1T to a 2T command rate can stabilize the system if issues arise. Since 1T-2T command rates are not a memory specification, Crucial does not list this as part of our overall module specification. THOMAS THOR Technical Support Analyst Tel: (800) 336-8896 Tel: (208) 363-5790 (outside US & Canada) Fax: (208) 363-5501 mailto:crucial.support@micron.com
__________________ CM-Stalker Amd 64 SD 3700+ WhiteWater Black ice Extreme II 4x Titan 120mm 1024MB TWINX-4400C25 Epox 9NDA3+ Mist Psu 550W POV 6800GT 425/1150 |
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