pentium D

[Valkerie]

pentium D

anyone try the 2.8GHz CPU?

so I hear that the Athlon64 chokes in multitasking? What about the AMD X2?

water cooling when oc'ing these cpu's?

 

[Furen]

First, the two friends of mine who went for the Pentium D 820 say that it SUCKS big time at stock (though I would never call myself or most of my friends typical PC users). Anyway, these two say that watercooling is a must for overclocking Pentium Ds unless you dont mind throttling a lot or dont plan on going over around 3.2GHz (which is not that great either). I have heard of them 820s reaching over 4.2GHz (dont remember where, though, so dont quote me on that) on a decent water cooling system. You'd need a good motherboard to be able to take the power load, so dont think of going with a cheap mobo and overclocking a PD. Most 3800+s seem to be able to do at least 2.4GHz (but since they havent been out for long so the number of samples is rather limited).

The A64 (single core) chokes on HEAVY multitasking, as in doing two things that significantly load the cpu at once. Moving onto dual core, the X2s will probably outperform anything pentium when multitasking.

 

[Lithan]

Not me but others have. Worst clock on air I've seen was in the area of 3.4-3.5ghz. Best I've seen was 3.8-3.9ghz. Average seems 3.7ish.

You heard wrong. There's a lot of complexity to the reaction of HT/Dual core/Multi-CPU/Standard single core procs to different multitasking situations. But no processor "chokes" except in benches designed with the intent of choking that processor in mind. AMD X2 should multitask very similarly to The Intel Dual cores, the exception being the Intel 840ee which has dual cores and HT on each.

Watercooling the P4 dual cores will probably gain you in the area of 300mhz more typically compaired to top notch air cooling. I'm not so sure about the x2's but I'd guess about half that.

 

[Markfw]

I think its eveident from benchmarks, and posts, that the X2 OCs well, still runs cool, and wipes the floor with the 820 (even OC'ed) So an 820 at 3.7 can't keep up with an X2 at 2.7 IOM (haven't seen a bench to prove that though, just extrapolation) and they definitely run much cooler.

 

[Duvie]

Basically 3.7ghz would be needed for an 820 to pretty much just be equal if not still behind 4800+ X2 at stock...A guy over at extreme did a few benches and it showed that, and showed it just equaled the XE in benches...If you OC an X2 to 2.7ghz you will definitley need 4.2+ghz to equal it...

 

[coomar]

the compare factor seems to be around 1.5-1.6 for pentium 4/ amd64 single cores, it looks like x2/ pentium d's are the same, so yeah 2.7 will equal 4.2 roughly

 

[Bona Fide]

If you want affordable dual-core at the expense of considerable power, go for it.

 

[curier]

I'm runnig 820D @ 3.99Ghz on P5wd2 usig dual loop water coolig with 320W peltier. water block is made by swiftech, and the rest of teh cooling system I made at home. 820 D@4ghz is as fast as AMD 4800 x2 and 840D EE (stock speed) (using Sandra 2005).
First attempts to run at 4ghz with 170W peltier fialed (water got too hot and the system was crushing after couple of minutes of tests)

After I put 320W peltier w/12V 25A power supply from Meanwell it works.
Everything is enclosed in a acrylic box (outside of my computer). There are two water blocks on first loop - one for the CPU, and second on the peltier to cool down the water. Second loop cools the hot side of the peltier via large 6"x12" radiator (and 2x120mm fans).

Personally I don't belive that anybody can run 820D @ 4ghz on stock coller using only air (maybe when the cpu is throtlig or idle, but not under 100% of load on both cores).

 

[Hacp]

Pentium D+Water+OC=Sweet....

X2+air+OC=sweet

 

[coomar]

sandra benchmarks mean nothing

 

[Sentential]

If you are going the intel track that would be the chip to buy. I would typically reccomend people to wait until we see what Presler has but since it wont have HT I dont see much of a point to waiting.

Even still I think single cores with HT is a better route to go.

 

[imported_Kensai]

I'm thinking about buying a few P-D 820s for folding rigs.

 

[IeraseU]

The 820D isnt a great gaming cpu, but it is a good multi-tasker. I think it's a great budget option for the non-gamer. If you are into cpu intensive apps like wmv/divx encoding, video editing, heavy photoshop, playing h2.64 HD wmv clips....and not so much games, then I like the pentium D series (certainly over any single core).

If one of your main priorities is gaming however, then I would say get an amd cpu. The amd dual cores are pricier, but good at both gaming and multitasking. The amd single cores do choke when multitasking, but only very cpu intensive apps, not browsing/winamp/email/office....any cpu can multi-task those apps.

 

[Duvie]

I have already shown you ppl it is not that great of a deal anymore...even when pruchasing prebuilt Dells....Th 3800+ is neglible amount more (with cheaper mainboards in comobo deals), it will flat out lay wait to the 820 in about everything...Its more comparable chip (if you can even say that) is the 830 which aganin with combo deals is equal to or more expensive....

i wouldn't touch them at all...the only advanatge I dont think really exist...price....Now if my Mom needed one and I didn't have time to build her a cpu I would say a Dell 820D would be fine, but I din't see any great deals that I could build with OS and still beat and come under in price with an AMD system...

 

[orion7144]

Originally posted by: IeraseU
The 820D isnt a great gaming cpu, but it is a good multi-tasker. I think it's a great budget option for the non-gamer. If you are into cpu intensive apps like wmv/divx encoding, video editing, heavy photoshop, playing h2.64 HD wmv clips....and not so much games, then I like the pentium D series (certainly over any single core).

If one of your main priorities is gaming however, then I would say get an amd cpu. The amd dual cores are pricier, but good at both gaming and multitasking. The amd single cores do choke when multitasking, but only very cpu intensive apps, not browsing/winamp/email/office....any cpu can multi-task those apps.

How can you say it is not a great gaming cpu? I get similar if not better FPS then I did with the P4 2.8 prescott I replaced it with. You have to take into account that if you do get the P4 D most people will have to change mb's, video cards, and ram. My old system was run daily at 3.6g on water. This one is at 3.4g stock HSF (water block adaptor is still not here) and is definately much more responsive than the the last one. It actually supprised me after reading all the reviews and bechmarks, at how fast it actually was.

Every thing else in the system is the same, just replaced mb,cpu,video, and ram. And the video card I got was a step down from what I had.

Soon as my water block adaptor gets here I will be doing some tests and post the results. This chip already runs more than 10c cooler than the last 2.8 prescott I had.

 

[IeraseU]

I say it's not a great gaming cpu because for it's price there are many other cpu's that outperform it when it comes to gaming. It's not a 'terrible' gaming cpu, it's just not the best for the price (and below), so if gaming is your number one priority, then you probably wouldnt be looking at the 820D.