speed vs timings

Its a bit more complicated than that but you are right roughly. Takes about 70mhz extra (roughly) to generally bench as fast with c3 than c2. Also i just ran superpi with memory at 1:1 and then at 9:10 (tmings the same) and was 1s slower not running 1:1 (memory was also 20mhz slower) but i imagine most of that was down to losing 1:1. You basically have to experiment and see what works best in your system. Im getting some corsair 3500ll soon and ive been told instead of running that at 1:1 (223fsb) @ 2,3,2,5 put it on divider so it runs in 250-260fsb range at 2.5. Will experiment and see whats best
 
StevenG said:
is it better to have your memory runinng as fast as it can on loose timings or slower on tighter timings?
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That depends on the speeds, the used timings and 1T or 2T

It could well be that 200Mhz 2-2-2-5-1T is just as fast as 3-4-4-8-1T 250Mhz

Basically slackening the timings is only a good thing if you can get a nice jump in speed, if you can only run your memory a few Mhz faster it's not worth it.
 
If you're buying a 2gb kit choices are limited anyway with regard to latencies and whatnot.

Just run benches at different settings and use whatever is fastest for you.
 
Meths said:
If you're buying a 2gb kit choices are limited anyway with regard to latencies and whatnot.
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Yes, most 2Gb do not overclock that much or can run at tighter than standard timings.

There are different kits though with some kits offering tighter timings than others but they are expensive.

As it looks like the speed increase these fast kits offer is only 5% at most for a lot more cash.
 
Dutch guy is right, although a little optimistic with 200 @ 2-2-2 being equal to 250 @ 3-4-4.

I did a little spreadsheet for latencies at different timings, both weighted (based on their real-world effect) and not (just using absolute latency).

I seem to remember 200 @ 2-2-2 being roughly equivalent to 330 @ 3-4-4. It may have even been 350 :eek: Of course, that's just with respect to latency, not counting bandwidth (which doesn't really benefit many real-world applications on the A64 platform).
 
On my A64 system I used to run TCCD 300+ when it was all the rage.

Saw the light, sold it, and went for some very cheap BH5 and to be honest the system just "felt" more responsive with the tight timings even though mem only running at around 210.

Just my 2p and have seen this posted by others in the past.
 
I did some quick testing last night, I kept the CPU at the same speed and ran 250Mhz 2.5-2-2-10-1T, 212Mhz 2.5-2-2-10-1T and 250Mhz 3-4-4-10-1T and the difference in 3DMark2001 was 400 points max (26900 vs 26500) while Doom III showed no difference at 1280*1024 4xaa/High and I will test in more detail when I get some time.

Early results indicate that it matters very little, I was actually surprised at the small difference between 2.5-2-2-10 and 3-4-4-10
 
Steevo38 said:
On my A64 system I used to run TCCD 300+ when it was all the rage.

Saw the light, sold it, and went for some very cheap BH5 and to be honest the system just "felt" more responsive with the tight timings even though mem only running at around 210.

Just my 2p and have seen this posted by others in the past.
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Agreed.

Dutch Guy said:
I did some quick testing last night, I kept the CPU at the same speed and ran 250Mhz 2.5-2-2-10-1T, 212Mhz 2.5-2-2-10-1T and 250Mhz 3-4-4-10-1T and the difference in 3DMark2001 was 400 points max (26900 vs 26500) while Doom III showed no difference at 1280*1024 4xaa/High and I will test in more detail when I get some time.

Early results indicate that it matters very little, I was actually surprised at the small difference between 2.5-2-2-10 and 3-4-4-10
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Agreed.
 
With all this in mind what 2gb kit would offer "best bang for the $"

i have a 3700sd but cant get it over 2600mhz as the 2x512 corsair value select kit i have just wont go there even on a divider. I ran it at 260x10 on the div. that gave 166 speeds

What im after is hopefully 2700mhz with a 2gb kit that dosn't cost a lot and reasonable timings to get whatever little extra i can.

Im a poor man :D
 
Efour2 said:
With all this in mind what 2gb kit would offer "best bang for the $"
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Probably OcUK or Geil Value at 2.5-3-3-6 (both kits should do those timings), and use a divider to push the CPU clocks.

The GSkill ZX is very good for the money though, with 2-3-2 timings.
 
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