Pentium D 805 @ 4.1GHz Anyone Else Tested?

[nukemaster]

All i can say for that is WOW

i would not like the heating/power sucking effects....but for the price....if i burn it in a year... ohh well.....

Still gonna wait and see what happens.... after all with conroe on the way.... it looks like Intel's going to make a come back...bout time, but i still like my amd computers. I go for whats fast/cool running

anyone think a 2 - dual core opteron (4 cpu's) system is just a waste of money at this time?

 

[liquidpaper007]

i got mine to 3.4 on stock volts with some ocz value ram and an $72 asus mobo. its prime stable. i am able to run at 3.6 pretty good, but sometimes it crashes, so i keep it at 3.4. there is no voltage adjustments so im stuck with stock

 

[krzulu]

My existing setup consists of 3 different AMD single core CPUs, including a Venice 3800+ that's been running at 2.8Ghz. I needed dual core, but I am expecting a price war this autumn.

Instead of buying a FX-62 at its most expensive I bought the following:
A 805D *and* a 920D, a few sticks of low latency 1GHz DDR2's (about twice the price of the cpu's 🙂) and a cheap Epox motherboard.

I already have watercooling, so I figured I'd just overclock these chips like crazy for some months. To consider the OC stable I expect at least 2 hours of "max heat" Prime95 on both cores. This is where things got interesting.

I quickly established that the 805D would go to 170FSB (3,4Ghz) on stock voltage. To attain any kind of dual-core prime95 stability I had to increase the voltage already at this speed.

Then my powersupply broke down. The trustworthy fortron source PSU's been overclocking AMD cpu's for ages, but the 805D killed it dead in the water - too high drain.

I replaced the PSU with a bigger one, and kept on priming (2 instances) at 170Mhz. I had been running my Black Ice Extreme 2 radiator fanless for all of my AMD oc's, stable as a rock. WIth this setup the CPU gradually increased to 65C (after 10 minutes or so), at which point the whole system shut down.

I dug out a couple of 12cm fans and attached them to my radiator. Waited half an hour for everything to cool down an re-started. 25 minutes afterwards the system succumbed to prime95 on two cores.

The D 920, on the other hand turned out to be a rather pleasant surprise. The crappy motherboard seems to give up around FSB235 (3.3Ghz), but the thermal characteristics seem to be totally smooth sailing.

I see reports of the D 920 reaching around 4Ghz. The price of this chip is also ridiculous. You may also save the price of a new PSU, and you could probably reach very good speeds on air.

I know there's a kind of sensation-grabbing aspect to the D805-story, but it's really a lousy buy for most users. I am eagerly awaiting my new motherboard, and expect to reach very good results on the D920.

I may not be the greatest environmentalist around, but this power-gobbling D805 overclocking adventure is costly both in terms of PSU strength, cooling requirements and energy bill. Your money is probably better spent on one of the 9xx D chips.

Kristian

 

[Jetpac]

Just fancied coming here to tell you guys (and the complete tools that say it is unreasonable) that my friend recieved shipment of PD805 + Mobo (asus premium something) 1gb corsair ddr2

we have successfully clocked stable at 4.01ghz on AIR ALONE (same zalman cooler and a vantec 12cm fan)

watercooling will mostlikely be transfered over from AMD rig in next week or so (will prob try and go higher then)

using a PD805 from exactly the same batch.

its possible, THG didnt try to go higher than 3.8 on air.
well recommended for a project.

i may get one soon and copy my mate!

 

[krzulu]

Have you been able to run two instances of prime95 for any amount of time in this configuration?

 

[endyen]

in general Intel CPUs are easier OCers and win in raw max clock overall.

I think that from a purist OCers pov, that isn't so true.
I like to OC for value.
I dont buy extra hsf or expensive ram. I do however demand a chip that is stable running F2H 24/7.
I buy generic samsung pc3200 ram. It gives me 2.5,3,3,7 T1 timings at pc3600 speeds. I like the AMD hsf because it is quiet (well at least compared to Intel's whinner) and allows me a 25% OC.
Now, I guess I could get better perf from an 805, if I spent $400 more to get high end ram, and a water system, but my mind just doesn't work that way. Besides, it will be summer soon, and well, all that extra heat has to go somewhere.
Then again, There are a couple or three AMD chips that will do a 50% OC. How many Intel chips do that?

 

[plex]

Hello
So where can I find anyone of this pentium 805 d 😀
Is there online stores where we can see the stepping ?

Thanks in advance.
plex

 

[dmurdock]

FYI for the guy who said the OC chip would not be dependable....you really have to understand how clock frequencies are generated and what does/does not add stress to the chip. I still have a celeron 366 running @ 550 that is now probably 5 years old and has been running pretty much 24/7 the entire 5 yrs (it's now our families archive file server/print server). This was with no vcore bump/nothing...just change FSB and adjust multiplier (ahh those were the days).

😀

 

[hippotastic]

I have built a 805 and oc it to 3.8 with a Zalman on it. It seems stable so far, I am currently mashing it to 100% cpu load for the last few hours.

I also have a 940, which oc nicely too. Only due to being a B1 revision and 65nm, its a lot cooler. I reckon that will do 4Ghz on air. Havent tested it yet, I have a zalman to replace the stock cooler before I tinker with a pricer cpu.

When the 9xx Cx revision comes out, I will bin the 805, and put this chip in its place, prolonging the investment of the inital build. I can reuse the mb, ram and gpu, with a cooler lees stressed, but equally as quick cpu.

I am a happy bunny atm.

 

[plex]

So where can people find cpu like the one used in this very good article 😀
That's cool if article author gives us pictures and more informations about the watercooling system used 😀

 

[webchimp]

My results:

I managed to boot into windows with it at 4500Mhz, but it wasn't stable. 4400Mhz was the highest I could go with it stable enough to run Super Pi as shown above. I currently have it set at 4200Mhz with 1.6v Vcore and it seems absolutely fine. 😀

Main components
Pentium D 805 CPU
Asus P5WDG2-WS i975X Motherboard
2 x 1Gb OCZ PC2-8000 Dual Channel Extreme Edition XTC Platinum Series EL-DDR2 RAM
PowerColor ATI Radeon X1900 XT-X 512MB
Western Digital Caviar SE16 250GB 2500KS SATA-II 16MB
OCZ PowerStream 520 watt PSU

Cooling
CPU block - Danger Den RBX
Chipset block - Danger Den Maze 4
GPU block - Danger Den Maze 4 Acetel
Radiator - Austin Mini with 4 x 120mm fans
Pump - Eheim 1260
The watercooling set-up uses 25mm ID pipe from pump to radiator and to and from the a custom build inlet and outlet manifolds. 1/2 inch ID pipe is uses from the manifolds to the waterblocks and back.

 

[plex]

very nice 😀
where did you buy this cpu ?

could you give us some photos of your system please.


thx
plex