ATI Radeon HD 4850 Preview: AMD Delivers Performance for the Masses
by Anand Lal Shimpi & Derek Wilson on June 19, 2008 5:00 PM EST- Posted in
- GPUs
Power, Thermals, Noise and Die Size
The Radeon HD 4850 is a single slot design, but the card itself gets very hot. At idle the card is mostly silent, but like the GeForce GTX 280 you can hear this thing once the fan spins up. It's definitely not as loud as the GTX 280, but it's not silent under full load.
The Radeon HD 4850 draws a bit less power than its closest competitor, the GeForce 9800 GTX.
With two 4850s paired up in CrossFire, we once again ran into issues with our power supply. Our 1000W OCZ EliteXStream wasn't always enough for the dual-GPU setup and in Call of Duty 4 our system rebooted in the middle of our test at 2560 x 1600. Thankfully OCZ sent us a PC Power & Cooling Turbo Cool 1200W unit that is certified for use with GeForce GTX 280 SLI, and if it works on that beast, it had better work with a pair of 4850s in CrossFire.
The PCP&C unit is quite loud as we mentioned in our review, but it got the job done, we were able to run all of our benchmarks without a hiccup after swapping power supplies. Despite AMD's small-GPU strategy, power consumption on multi-GPU configurations is still just as much of a problem as it is for NVIDIA.
The Test
| Test Setup | |
| CPU | Intel Core 2 Extreme
QX9770 @ 3.20GHz |
| Motherboard | EVGA nForce 790i SLI Intel DX48BT2 |
| Video Cards | ATI Radeon HD 4850 ATI Radeon HD 3870 X2 ATI Radeon HD 3870 NVIDIA GeForce 9800 GTX NVIDIA GeForce 9800 GX2 NVIDIA GeForce 8800 GTX NVIDIA GeForce 8800 GT NVIDIA GeForce GTX 280 NVIDIA GeForce GTX 260 |
| Video Drivers | Catalyst Catalyst 8.5 ForceWare 177.34 (for GT200) ForceWare 175.16 (everything else) |
| Hard Drive | Seagate 7200.9 120GB 8MB 7200RPM |
| RAM | 4 x 1GB Corsair DDR3-1333 7-7-7-20 |
| Operating System | Windows Vista Ultimate
64-bit SP1 |
| PSU | PC Power & Cooling Turbo Cool 1200W |
Facebook
Twitter
RSS
114 Comments
View All Comments
npp - Thursday, June 19, 2008 - link
This is a fantastic card, and if it really sells for around 150€ here in Europe, this is the way to go. Very impressive offering from AMD, I'm simply amazed!The 4870 will often outperfotm the latest nVidia card, I guess... Combined with the supposed refusal of Intel to grant nVidia rights for designing chipsets featuring QPI links, this may mean hard times for the guys in green. They were a little early announcing a war on so many fronts, as it seems. Honestly speaking, I was tired from their domination and insane prices anyway, so this is a very nice turning point.
js01 - Thursday, June 19, 2008 - link
I knew there was a reason why I've stuck with amd for the last few years, because I always get my money's worth. It must be painful to be an early owner of a 9800gtx right now considering the huge price drop.BikeDude - Friday, June 20, 2008 - link
Why do you have to stay with a particular brand? Are you not free to pick and choose the best deal when you need it?Those who bought the 9800GTX a couple of months ago have been able to get a lot of good quality gaming going while some of us have been waiting for the next great thing. Personally I have been waiting for a while now, I still have a 7800GTX! Was the waiting worth it? I doubt so.
That said, I would really welcome some insight into the driver quality of nVidia drivers vs ATI. nVidia has been disappointing for the past two years. Instability, features gone missing, anomalies introduced (like resetting the colour profile in Vista after login), etc...etc... At one point I was unable to play a DVD for more than 30 minutes before my computer froze. Downgraded the driver and all was fine again. Luckily nVidia fixed that in a later release, but come on... That one was bad, and there's nowhere I can file bug reports.
brentpresley - Thursday, June 19, 2008 - link
Would be great if someone can run Folding At Home on this card and publish the performance.The new NV client is smoking right now, and lots of us are pondering buying cards to fold on.
KCjoker - Thursday, June 19, 2008 - link
it gets way too hot for a single slot card dumping the hot air inside the PC. Should be better when some aftermarket cards come out. But why does it draw that much power when the chip is much smaller than Nvidia's?epsilonparadox - Thursday, June 19, 2008 - link
From the hints in the article, I would assume this is a very large chip that nullifies any benefits the smaller process would have provided. Plus AMD chose a single slot solution which probably isn't doing a good job of cooling the chip.fungmak - Thursday, June 19, 2008 - link
Well the power that is drawn is about the same as a 9800 GTX.However, the 4850 is rumoured to have 950 million trannies compared to the 750 million of the GTX. Also, the die size is rumoured to be around 275mm2 compared to 330 mm"2, so slightly higher density, though i would imagine this is offsite by the reduciton in power due to 55nm compared to 65nm. So all in all the power draw is actually not too bad.
andreschmidt - Thursday, June 19, 2008 - link
956 million transistors on 55nm fabrication process ;)ImmortalZ - Thursday, June 19, 2008 - link
The Multi-GPU pages seem to be broken - they go straight to the search page.derek85 - Thursday, June 19, 2008 - link
No the links are fine actually... Anandtech took this article offline for a very short moment for some reason and I hit the same problem during that time.