Brisbane OC Round II

[Bradtechonline]

Okay I spent some time reading various sites, and finally got my CPU up to 2.85 Ghz on stock.

My CPU temps are 34c in T-Utility hardware monitor. Here are my important cpu-z stats.

AMD Athlon X2 Brisbane 3600+ Stepping 1 Rev BH-G1

Voltage 1.408
Core Speed 2853.1 mhz
Multiplier x9.5
Bus Speed 300.3 Mhz
HT Link 901.0

Memory Tab Info
G.Skill PC2 6400 5-5-5-12 default
DDR2
Size 1024
Channel Single

Frequency 407.6 Mhz
FSBRAM CPU/7
CAS Latency 5 clocks
RAS Precharge 5 Clocks
Cycle Time 12 Clocks
Bank Cycle Time 14 Blocks
Command Rate 1T

Anyone see any probs with this? I started hanging up when I got it up to 2.9 area.

 

[Bradtechonline]

Just thought I'd add I got my DDR 2 800 running at 533

 

[MarcVenice]

Load temps ? And why is your ddr 2 800 running at 533 if your fsb is around 400 ? Why not run 1:1 ?

 

[Bradtechonline]

Originally posted by: MarcVenice
Load temps ? And why is your ddr 2 800 running at 533 if your fsb is around 400 ? Why not run 1:1 ?

I read that you wanted to run your memory lower to trade off for clock speed increasing.

Going to run orthos for around 10-15 min and see how the temps go.

 

[Bradtechonline]

Load temps and voltage got to high under stress test for my liking. Got up around 65c and 1.55 voltage. Going to bump it on down. Had orthos goin for 10 minutes.

 

[996GT2]

Nice work...2.8GHz at only 1.4V! I guess I got a pretty bad chip then, since I can only manage about 2.6GHz stable at 1.42V and need almost 1.5V to pull of 2.8 GHz stable.

I would suggest you use a faster RAM divider though...I've got my DDR2 at 866 MHz 4-4-4-12 with no issues, and I think that you can probably get yours to the same speed at 5-5-5-15-2T if you have the red-heatspreader G.Skill NQs.

 

[MarcVenice]

You've read semi-wrong. If you have for example ddr 400 ram, running that 1:1 with a 400fsb is inpossible, so you use a divider to underclock your ram, because a higher FSB offsets a lower ramclock. But, since you have ddr 800, you can simply run your ram at 1:1 which is, at a 400fsb, exactly 800mhz, which is stock, which is simply perfect. But since things are getting to hot, and you might have to go with a 350 fsb, you can still run 1:1 and that means your ram will be underclocked to 700mhz, and might allow you to tighten up the timings.

and yeah, 1.55v is way to much if you're only using stock cooling. You don't wanna see them go over 60, I myself won't let them go over 55 celsius or so.

 

[Bradtechonline]

I'm hitting around 55c at 2.75

My 12V rail though is down to 11.71. Might be time for a new PSU.

Doing orthos for about 5-10 minutes straight my CPU is eating up around 1.45-1.49V and staying around 55c

Think I may buy one of those Artic Pro 64's, and a new PSU.

 

[Bradtechonline]

Originally posted by: 996GT2
Nice work...2.8GHz at only 1.4V! I guess I got a pretty bad chip then, since I can only manage about 2.6GHz stable at 1.42V and need almost 1.5V to pull of 2.8 GHz stable.

I would suggest you use a faster RAM divider though...I've got my DDR2 at 866 MHz 4-4-4-12 with no issues, and I think that you can probably get yours to the same speed at 5-5-5-15-2T if you have the red-heatspreader G.Skill NQs.

Mine are the ones with the Light Green heatspreaders. They were out of stock of the ones that are 5 bucks more when I bought this.

 

[996GT2]

Originally posted by: Bradtechonline

Originally posted by: 996GT2
Nice work...2.8GHz at only 1.4V! I guess I got a pretty bad chip then, since I can only manage about 2.6GHz stable at 1.42V and need almost 1.5V to pull of 2.8 GHz stable.

I would suggest you use a faster RAM divider though...I've got my DDR2 at 866 MHz 4-4-4-12 with no issues, and I think that you can probably get yours to the same speed at 5-5-5-15-2T if you have the red-heatspreader G.Skill NQs.

Mine are the ones with the Light Green heatspreaders. They were out of stock of the ones that are 5 bucks more when I bought this.

Hmmm...light green most likely means you have the NRs, which use Elpida chips. They should probably clock to 900-950 MHz at 5-5-5-15-2T timings (2.2V ish probably)

 

[montypythizzle]

Originally posted by: Bradtechonline
I'm hitting around 55c at 2.75

My 12V rail though is down to 11.71. Might be time for a new PSU.

Doing orthos for about 5-10 minutes straight my CPU is eating up around 1.45-1.49V and staying around 55c

Think I may buy one of those Artic Pro 64's, and a new PSU.

Check your PSU with a Digital Mulit-Meter.
My V was 11.68 on 12v rail in Windows with the DMM the actual V was 11.90

 

[Bradtechonline]

Originally posted by: 996GT2

Originally posted by: Bradtechonline

Originally posted by: 996GT2
Nice work...2.8GHz at only 1.4V! I guess I got a pretty bad chip then, since I can only manage about 2.6GHz stable at 1.42V and need almost 1.5V to pull of 2.8 GHz stable.

I would suggest you use a faster RAM divider though...I've got my DDR2 at 866 MHz 4-4-4-12 with no issues, and I think that you can probably get yours to the same speed at 5-5-5-15-2T if you have the red-heatspreader G.Skill NQs.

Mine are the ones with the Light Green heatspreaders. They were out of stock of the ones that are 5 bucks more when I bought this.

Hmmm...light green most likely means you have the NRs, which use Elpida chips. They should probably clock to 900-950 MHz at 5-5-5-15-2T timings (2.2V ish probably)

http://www.newegg.com/Product/...x?Item=N82E16820231085

 

[cammmy]

I just came across this forum on a somewhat unrelated search and saw the original post by Bradtechonline. Unfortunately, I joined the forum to deliver you some unpleasant news.

I have the same Tforce-x2 combo, and I run my system at pretty much the same speeds as you posted. I was surprised to see how well my ram was doing on the 533 divider. Like you, it was running over 400MHz, but I had some cheap value ram rated at DDR2 677 speeds.

After running a Sandra Memory Bandwidth test I noticed Sandra was telling me that my
ram was running at about 350 MHz, and not the 400+Mhz CPU-Z was reporting.

So who is right?

Well, I think Sandra is. Sandra is saying that I am using a memory divider of 8. This makes sense. At stock speed the memory would run at 1900/8 = 237.5 or DDR2 475 speeds. If the divider were 7 ( as CPU-Z says ) then the stock speed is 1900/7=271 or DDR2 542. And since
542 is greater than 533 it would make sense for the bios to choose the 7 divider on the 533 setting.

Try Sandra out for yourself!

 

[montypythizzle]

Try turning off cool & quiet?
I had my 3600 Brisbane at ~2.85-2.9 and could run 3dmark06 but I needed some voltage, unlike your "stock volts" I had to use ~.05V to get it to 2.8-2.9

I have my 3600 at Orthos stable with stock volts at 2.7GHZ
I couldn't get 1T with my sticks, it just wouldn't post, oh well not much of a performance difference.