Overclocking the 805D

[940Socket2me]

Browsing the tech trade sites I found this:

http://www.techwarelabs.com/articles/hardware/dcOAB/

I read it. Not the most detailed article and I don't OC typically... but I thought, "I have the same chip and board ...what the hell, I'lljust ramp up the cpu FSB to 667 and leave my 667 memory speed as is. No voltage change - no nothing.

I'm running at 3.4 Ghz.

Sisoft shows 41C at idle. Showed 40C idle @ stock speeds.

Benched arithmetic and spanked a AMD x2 3800.

I am experiencing brown out in the neightborhood though. I wonder if my CPU which has an EPA of 8 in the city and 14 on the highway is the culprit.

SiSoftware Sandra

Benchmark Results
Dhrystone ALU : 17943 MIPS
Whetstone iSSE3 : 8424 MFLOPS
Results Interpretation : Higher index values are better.

Performance Test Status
Run ID : SHUNTLY on Sunday, April 16, 2006 at 4:47:21 AM
NUMA Support : No
SMP Test : No
Total Test Threads : 2
Multi-Core Test : Yes
Cores per Processor : 2
SMT Test : No
Dynamic MP/MT Load Balance : No
Processor Affinity : P0C0T0 P0C1T0
Number of Runs : 64000 / 640

Processor
Model : Intel(R) Pentium(R) D CPU 2.66GHz
Speed : 3.34GHz
Performance Rating : PR7338 (estimated)
Cores per Processor : 2 Unit(s)
Type : Dual-Core
L2 On-board Cache : 2x 1MB ECC Synchronous, ATC, 8-way set, 64 byte line size, 2 lines per sector

Chipset 1
Model : ASUSTeK Computer Inc ??? (0071)
Front Side Bus Speed : 4x 167MHz (668MHz data rate)

Features
SSE2 Technology : Yes
SSE3 Technology : Yes
SSE4 Technology : No
HTT - Hyper-Threading Technology : No

Performance Tips
Notice 5008 : To change benchmarks, click Options.
Notice 5004 : Synthetic benchmark. May not tally with 'real-life' performance.
Notice 5006 : Only compare the results with ones obtained using the same version!
Tip 2 : Double-click tip or press Enter while a tip is selected for more information about the tip.

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Should I up the voltage though to be safe under max load?

 

[CompGeek]

Nice OC and good temps(40 idle? that's exelent). If you wanna go higher why not, as long as it's stable and runing at normal temps(under 65 on load) you don't need a volt bump. Or that's what i know and it works though i'm rather scared about not over charging my chip.

 

[endyen]

Not to burst your bubble, but notice 5004 really does apply here.
In gaming, an 805 at that speed, would not be as good as a single core P4 3.0ghz.
Even dual core optimized progs are going to be bandwidth starved. In real world benches, you wont even come close to an 820D

 

[CompGeek]

Look at Anands Benchmark on 805.
A 805 OC at 3.4GHZ will with no doubt BEAT a 820/830.
Real performance!=Sintetic benchies performance though good sintetic results are usually followed by good performance in programs.

 

[benjamin]

Even dual core optimized progs are going to be bandwidth starved. In real world benches, you wont even come close to an 820D

Anand tested this, the difference isn't as pronounced as you'd think, and the 805 at 3.3 would come out on top.

The question about volts, though, 'to ensure stability' -- you should prime95 and/or superpi soak test the CPU before you exclaim "STABLE!". If it doesn't fail, you're in the clear.

Still. Looks good, I may look to one of these in the next few months for a stupid cheap HTPC. Nobody will want them when Conroe arrives.

 

[weskurtz81]

You might want to benchmark your cpu in realworl benchmarks.... the X2 3800 will beat your 805 in probably %80 of the benchmarks.... if not more... if it is clocked @3.4..... I encoded finding nemo with my old x2 3800 stock and my buddies 820 OC'ed to max, which was around 3.4-3.5..... and at stock the X2 was still faster.... not by much.... When I overclocked the X2 3800 to 2.65, I beat his 820 overclocked by about 15 minutes in total encode time.

 

[WINDSHEAR]

that's because 8xx sucks.

 

[Heyyou27]

That's true; 9xx is a lot better.

 

[weskurtz81]

Yeah, but the basic difference between 8XX and 9XX is 90 and 65 nano.... that is it. It is still the same "crappy" architecture..... I would take it over a G5 anyday.... but not over a Dual Core Opty. Maybe you can overclock a 9XX more, but I still think they would be slower.

 

[CompGeek]

Pentium 9xx have virtualization i think, and run cooler consume less.
They have a very generous OC potential,not as much as an Opty but defenitely more than a X2.

 

[weskurtz81]

The X2 is a case by case scenario.... I pushed mine to 2.65 stable from 2.0.... but as far as consuming less power and running cooler, that is part of the process move, same architecture.... and that move is what gives them the better OC potential. But I fail to see how it could be all that much better, my friends 820 had very little over clocking headroom..... could be case by case with those also. I am curious what the average 9XX overclock is on air cooling.

 

[CompGeek]

On air 4 GHZ is almost certain. The con here is you'll need a good mobo that comes at a not so cheap price.(almost 200$)
Probably your friends don't own good OC mobos. 8xx should do 3.7ghz on a good mobo,though it will heat things up if you don't have good cooling.

 

[weskurtz81]

He has a pretty good one, crazy catch to this whole Intel Price disparity, is no one considers in the cost of the motherboard when talking about prices. @ $200, $100 more than a pretty good AMD based mobo, Pentium D's get good performance..... that is fairly substantial.....

 

[WINDSHEAR]

The X2 is a case by case scenario.... I pushed mine to 2.65 stable from 2.0.... but as far as consuming less power and running cooler, that is part of the process move, same architecture.... and that move is what gives them the better OC potential. But I fail to see how it could be all that much better, my friends 820 had very little over clocking headroom..... could be case by case with those also. I am curious what the average 9XX overclock is on air cooling.

well, of about half a dozen ppl I know of who tried overclocking a 9xx, most of them got around 4.2Ghz, one got 4.5Ghz, another 4.7, and somebody even got 5.1Ghz... it takes a good mobo and some watercooling, and you can really go places with 9xx.

 

[weskurtz81]

would be interesting to compare the D 9XX's to an Opty 165, both at max overclock, and see if they can even hang then......

 

[WINDSHEAR]

yes!! that would be very interesting... speaking of which, I'll find some benches for those overclocks I talked about, and you find me some benchies for the Opty 165, k?

Thanks

 

[benjamin]

You might want to benchmark your cpu in realworl benchmarks.... the X2 3800 will beat your 805 in probably %80 of the benchmarks.... if not more...

Sure, and an FX-60 would beat any Celeron you can throw at it; I guess that means AMD is teh winner.