PDA

View Full Version : Memory timing vs Speed


zoomy942
12-15-04, 10:11 AM
After reading the article on the nvnews front page about memory timings and bandwidth, i started to wonder about my machine. I have my ram at 222 fsb but with 3-4-4-9 timings.

i am curious of opinions of anyone that has tried the better timings (i think mine might do 2.5-3-3-6) versus the higher fsb speed.

the reason i have my ram overclocked is so my athlon 64 2800 will go from 1.8 to 2 gigahertz, but that may not be a big deal.

jolle
12-15-04, 11:06 AM
run a few benchmarks, write down your results, then step down to 200Mhz FSB/Mem and se how low you can go with the timings, 2-2-2-10 might be ideal, I think the TRAS is best around 10-11 or something on Nforce chipsets, dont know why tho (certain 11 was fastest on Nforce2 atleast)

rerun the benchmarks and se what resaults you get, and then if possible try to push the FSB and RAM up a bit at the lowest timings you could get and stay stable on.
I think some apps/games might prefer the lower timings and some the higher RAM/FSB speed, tho 22Mhz (44) is prolly more then the timings can make up for, aswell as the extra 200mhz CPU clock.

would be great to se the results if your up to it.

zoomy942
12-15-04, 11:10 AM
while, i'm not the benchmarking machine, it would be neat for me to not be lazy and make a few benchmarks.

jolle
12-15-04, 11:23 AM
I know what you mean, Im not alot for that sort of stuff either, and the extra hassle to reset BIOS if it wont boot and all that..
I rather just play hehe..

If you decide to go and do it, use UT2k4 or some games that load the CPU alot and do it at low resolution so the GPU doesnt mask the differences..

Daneel Olivaw
12-15-04, 01:02 PM
Though its on a P4, this article is interesting. Timings, PAT... etc
http://www.bleedinedge.com/reviews/p4p800_facts_about_pat/p4p800_facts_about_pat_pg1.html

OCForums_Osirus
12-15-04, 07:10 PM
Well I can run my system at 2.75ghz with a divider of 6:5 and hit maybe 7.4GB/sec on bandwidth in Sandra. This is running my ram at 267mhz/306HTT, but if I set my HTT to 289HTT/289mhz FSB so in effect running 1:1, I can hit 7.6GB/sec on Sandra, same can be said if I run at 2.5ghz and 279HTT/279mhz FSB.
So it all depends, I can get higher memory speeds with a lower clock speed.
I also run my memory at the listed timings in my sig (2.5-4-8-4 1T)

john19055
12-16-04, 07:31 AM
On my 3400 A64 I hit higher scores running at 2-2-2-5 1T at 200 FSB Then I hit running at a higher benchmarking at than 3-4-4-8 2T at 225 FSB ,I thought running at a higher FSB would give me a better score but it does not.

Filibuster
12-17-04, 07:11 AM
Most of what I've read show that Athlon 64 is happier with tighter timings and then worry about fsb, where a P4 is better off with faster FSB (and then get the timings if you can).

You may be better off switching it up, like 225Mhz at 2.5-3-3-10 1T.

Blacklash
12-18-04, 01:57 AM
Anandtech has repeatedly stated Tras 10 is best for AMD. So as another said you might want to try 2-2-2-10 1T if possible.