Bladerunner Posted January 31, 2008 Share Posted January 31, 2008 I spent quite a bit of time checking these forums for an answer to my question....close but no cigar. I have replaced a P4 (Northwood) socket 478 2.8gHz/533mHz FSB with a P4(Northwood) 3.2gHz/800mHz FSB....installed in an Aopen AX4SPE-UN mobo with 1 gig of TWINX PC3200 XMS ram. I got better benchmark scores on 3DMARK03 with the 2.8gHz processor. I'm concerned I am not utilizing all the available bandwidth of this processor and mobo with my present ram. I don't know how to calculate the bandwidths to match everything together. Also...I have hyperthread turned off for gaming...and I have a BFG 7800GS vid card. Thanks for any help. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted January 31, 2008 Corsair Employees Share Posted January 31, 2008 When you changed the CPU Did you re-install the O.S.? Or just change the CPU? If not I would use another HDD and just do a fresh install of the O.S. and test test it again and see if the results change. Link to comment Share on other sites More sharing options...
Bladerunner Posted January 31, 2008 Author Share Posted January 31, 2008 No I did not reinstall OS. Am using XP Home. I'll give it a try and post results...may be a while before I get to this...reformatting and restoring everything = REAL PAIN IN THE ###....but it will give me a chance to use my new "My Book" usb HD to restore. Thanks for the advice...but any info on my bandwidth issue? Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted January 31, 2008 Corsair Employees Share Posted January 31, 2008 I would use another HDD and just install fresh to compare. Link to comment Share on other sites More sharing options...
Xtreeme Posted February 3, 2008 Share Posted February 3, 2008 I really doubt that cpu is being held back by the ddr ram. The northwoods did love bandwidth though it was due to cpu ineffecient design. But this is compairing SDR to rambus when it came out at first. Once ddr was used on P4, rambus was out AGAIN (intel pushed it on us first in P3 boards) then sdr was budget making ddr the one to have. In the end I think your better off just using that for now. Get a better A64 or Core2 later, the P4 is just not that fast or efficient (watts to performance OR mhz to performance ratio). Link to comment Share on other sites More sharing options...
DerekT Posted February 3, 2008 Share Posted February 3, 2008 but any info on my bandwidth issue? Download CPU-z from Here and post screen shots of your CPU/Memory/SPD tabs. You can use Photobucket Here to upload the graphics. Link to comment Share on other sites More sharing options...
Bladerunner Posted February 4, 2008 Author Share Posted February 4, 2008 Hey thanks for your input guys! I'm going to pick up a new HD and do fresh install as suggested...but until then I will get that shot of CPUZ sometime this week. I tried a couple more things and got my 3DMArk05 score up to 6870...but everything was SCREAMING. I ran the CPU up to 3.5gHz/864mHz FSB @ 1.60volts with memory latencies set for 3-3-3-8 @ 1.7volts and had my Vid Card (7800GS AGP) at 780mHz Bus/545mHz memory. System was stable but I really don't like running the system that close to the edge. One thing I noticed...the CPU tests in 3DMARK05 hit my CPU HARD...1 to 2 fps max. reading what I have over the past few days...it looks like I need faster memory...I'd like to run at DDR 400 with 2-2-2-5 latencies...no can do with this memory...got ROM CHECKSUM boot errors with anything less than 3-3-3-8 while running DDR400 speeds. I also tried to UNDERCLOCK the memory by changing the memory multiplier and reducing the latencies to 2-2-2-5 for DDR133...and ran up the CPU frequency...but after making changes in the bios a subsequent reboot and check with CPUZ indicated a CPU freq. of 3.1gHz even though the speed was at 4gHz in bios. No changes in CPU freq. was effective with a change in memory multiplier....however the memory speed did change as expected. I'll get that info posted soon. Thanks guys. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted February 5, 2008 Corsair Employees Share Posted February 5, 2008 What is the exact part number of the modules you have now? Link to comment Share on other sites More sharing options...
dsherrill Posted February 5, 2008 Share Posted February 5, 2008 The memory was purchased approx. 3yrs ago. Its TWINX1024-3200C2. Link to comment Share on other sites More sharing options...
DerekT Posted February 5, 2008 Share Posted February 5, 2008 Can you enter BIOS, load setup defaults, save setup defaults and then set the memory Voltage to 2.75 Volts with the timings manually set to Cas 2-3-3-6 (TCL, TRCD, TRP, TRAS) 2t Command Rate. NO CPU overclock. Results? Link to comment Share on other sites More sharing options...
Bladerunner Posted February 5, 2008 Author Share Posted February 5, 2008 I can do everything you asked except I cannot get 2.75volts on my MB for memory bus volts. I can get 2.7 or 2.6..those are my only two options with this MB. I didn't try 2-3-3-6 because the 533mHz timings (2-3-3-7) didn't work for 800mHz with no OC. I get a rom checksum error. Thanks! Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted February 6, 2008 Corsair Employees Share Posted February 6, 2008 Can you test the modules one at a time on another system? Link to comment Share on other sites More sharing options...
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