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Radeon HD3850 vs. HD2900PRO

Last response: in Graphics & Displays
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January 4, 2008 3:50:49 AM

Ok...both of these I'm lookin at have 512 MB, 256-bit processing (actually there's a 512, 512 2900PRO)

Wouldn't they have the same performance...they're both GDDR3 too?

Confused
January 4, 2008 3:53:10 AM

sorry just saw someone posted the same topic
January 4, 2008 6:11:03 PM

3870 is better check legit review
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January 4, 2008 8:13:43 PM

It should be about same performance except that 3850 would be whole lot better in power consumption, has dx10.1, and possibly better AA performance.
February 7, 2008 12:16:30 AM

The HD2900PRO 256bit only has a single 8pin power connector not two like the 512bit, do you think it's still power hungry over the HD3850? I guess it only has a 6pin connnector and a heatsink only model so It's a better bet if you don't have a problem with PCI-E 2.0.
February 7, 2008 12:29:31 AM

low351 said:
The HD2900PRO 256bit only has a single 8pin power connector not two like the 512bit, do you think it's still power hungry over the HD3850? I guess it only has a 6pin connnector and a heatsink only model so It's a better bet if you don't have a problem with PCI-E 2.0.


yes power hungry
February 7, 2008 2:23:00 AM

yeah, it will draw a lot more power than the 3850. The 3850 is based on a 55nm process.

Go for the 512 3850.

Or a 512-bit 2900 PRO if you can find one (and if you don't mind the power consumption).
February 7, 2008 2:24:03 AM

yeah, it will draw a lot more power than the 3850. The 3850 is based on a 55nm process.

Go for the 512 3850.

Or a 512-bit 2900 PRO if you can find one (and if you don't mind the power consumption).
February 7, 2008 4:07:48 AM

Well I actually have the 2900 Pro 256-bit and I'm able to hi 11k in 3dmark06 with my OC using only a 6-pin adapter. I just ordered a 3850 512mb card, and it should be here by Monday. I'm going to do a full comparison of both cards. as soon as it comes in. I'm hoping that I can achieve better performance with the 3850 512Mb when OC'd versus the 2900 Pro OC'd.

If you want to wait, I'll post my results, that way you can know which one for sure is better.
February 7, 2008 8:38:30 AM

Im interested in your results soo please post them. I got a 2900pro with the full 512bit bus. Not tried oc'ing yet.
February 7, 2008 9:27:57 AM

What kind of specs are you running and what's your 3Dmark06? at 850/2000 I'm able to pull 11,003 3dMarks. At stock it's at 9,000 3Dmarks.

My Specs:
Intel Core 2 Duo e6300 @3.2Ghz

2GB of DDR2-800

ATI 2900Pro @ 850/1000 benchmarks @800/1000 normal

3x500GB Seagate Barracuda .10 Sata, 1 WD 320GB Sata, 1 250GB Seagate Barracuda .10 IDE

Evga 680i SLI A1

Thermaltake T2 430w

February 11, 2008 7:26:29 PM

1000 is a pretty big o/c on the memory though.

what are your temps?
February 11, 2008 8:54:14 PM

43c, fan at 39%, which is still inaudiable for me. Tomorrow I'll have the 3850 512mb, so I'll be able to show you guys which one is better, I'm hoping on the 3850 512mb, because it cost me more money.
February 12, 2008 4:01:50 PM

Have you benchmarked it yet??

curious thats all
February 22, 2008 5:41:48 PM

Indigomoss: So did you get a comparison done? I'm surprise your HD2900 is around 43C mine idles at 47C and hits up around 60C on load. What are you using to overclock, riva or Atitool? And did you replace the bios with a german hack?

EDIT: alright I found out where you posted them. Thanks.

http://www.tomshardware.com/forum/248662-33-3850-2900pr...
February 22, 2008 6:37:03 PM

Yup no problem man. BTW I've been using ATItool for the 3850 as opposed to Rivatuner for the 2900Pro.
!