Is it better to run as close to 1000 Mhz HT or the highest FSB possible?

[ahsumdude]

I'm new to this Ocing on the Athlon 64.

At this moment I'm running 250 * 10 with a HT multiplier at 4. So my HT bus is running at 1000.

Should I drop my HT multi to 3 and push this Corsair DDR 550 as far as it can go and only get 800 to 900 HT bus?

 

[Duvie]

I say as long as you drop it to 3 and getthe fsb in the 270 range the HTT will be in that 800-1000 range and little or no noticeable difference. The added ram bandwidth will give you more and that may not be much....

Try 9x277 = near 2500mhz and will run 554ddr with 1:1 divider...3x277 will be 831HTT and that is fine...

 

[zakee00]

Originally posted by: ahsumdude
I'm new to this Ocing on the Athlon 64.

At this moment I'm running 250 * 10 with a HT multiplier at 4. So my HT bus is running at 1000.

Should I drop my HT multi to 3 and push this Corsair DDR 550 as far as it can go and only get 800 to 900 HT bus?

dont worry about it, it makes almost nil difference. drop the multi and see how high you can OC. i run my system at 295*3=885

 

[SunSamurai]

I hear that ram badwidth hardly makes a differance.

 

[richardrds]

I run my LDT Multi at 2x (because my AV8 has pblms running 3x) with my 3000+ Winie set at 278x9 = 2.5Ghz. I also am running a 2:3 RAM divider with Geil Value RAM 3 3 3 8 1T. There have been quite a few people that have done studies that prove the LDT multi does not effect performance that much on the A64 archetecture.

Suposedly my system has two performance no-no's in it:
1. Running LDT at 2x on HTT bus (556Mhz)
2. Running Value RAM at 2:3 divider (178Mhz), Zebo's Memory Sticky proves this myth false.

But i still get pretty damn good performance benchmarks from it:
Sandra05 - Dhrystone ALU = 11283 MIPS
1M SuperPie = 37 Sec
PCMark04 = 4842

 

[miketheidiot]

Originally posted by: aeternitas
I hear that ram badwidth hardly makes a differance.

however much more than HT

 

[zakee00]

Originally posted by: miketheidiot

Originally posted by: aeternitas
I hear that ram badwidth hardly makes a differance.

however much more than HT

ram bandwidth makes a ton of difference on some apps (coughcoughsuperpi), and ht dosnt have a big impact.
EDIT: i can't get my system to post under 3x LDT, but i did lower the memory speed and loosen the timings. my superpi times went from 33s to 38s!!!