The Radeon HD 4850 & 4870: AMD Wins at $199 and $299
by Anand Lal Shimpi & Derek Wilson on June 25, 2008 12:00 AM EST- Posted in
- GPUs
Power Consumption
NVIDIA's idle power optimizations do a great job of keeping their very power hungry parts sitting pretty when in 2D mode. Many people I know just leave their computers on all day and generally playing games 24 hours a day is not that great for the health. Idle power is important, especially as energy costs rise, and taking steps to ensure that less power is drawn when less power is needed is a great direction to move in. AMD's 4870 hardware is less power friendly, but 4850 is pretty well balanced at idle.
Moving on to load power.
These numbers are peak power draw experienced over multiple runs of 3dmark vantage's third feature test (pixel shaders). This test heavily loads the GPU while being very light on the rest of the system so that we can get as clear a picture of relative GPU power draw as possible. Playing games will incur much higher system level power draw as the CPU, memory, drives and other hardware may also start to hit their own peak power draw at the same time. 4850 and 4870 CrossFire both require large and stable PSUs in order to play actual games.
Clearly the 4870 is a power junky posting the second highest peak power of any card (second only to NVIDIA's GTX 280). While a single 4870 draws more power than the 9800 GX2, quad SLI does peak higher than 4870 crossfire. 4850 power draw is on par with its competitors, but 4850 crossfire does seem to have an advantage in power draw over the 9800 GTX+.
Heat and Noise
These cards get way too hot. I keep burning my hands when I try to swap them out, and Anand seems to enjoy using recently tested 4800 series cards as space heaters. We didn't look at heat data for this article, but our 4850 tests show that things get toasty. And the 4870 gets hugely hot.
The fans are kind of quiet most of the time, but some added noise for less system heat might be a good trade off. Even if it's load, making the rest of a system incredibly hot isn't really the right way to go as other fans will need to work harder and/or components might start to fail.
The noise level of the 4850 fan is alright, but when the 4870 spins up I tend to glance out the window to make sure a jet isn't just about to fly into the building. It's hugely loud at load, but it doesn't get there fast and it doesn't stay there long. It seems AMD favored cooling things down quick and then returning to quiet running.
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Final Destination II - Wednesday, June 25, 2008 - link
Dear girls and guys,does anyone know of a manufacturer, who offers a HD4850 with a better cooler? I'm desperately searching for one...
Please reply!
Graven Image - Wednesday, June 25, 2008 - link
Asus recently announced a 4850 with a non-stock cooler, though their version still doesn't expel the air out the back like a dual slot design. (http://www.asus.com/news_show.aspx?id=11871)">http://www.asus.com/news_show.aspx?id=11871). Its not available yet thought. My guess is mid-July we'll probably start seeing a couple different fan and heatsink designs.strikeback03 - Thursday, June 26, 2008 - link
Only dual-slot card I've ever used was an EVGA 8800GTS 640, it sucked air in the back and blew it into the case.Final Destination II - Wednesday, June 25, 2008 - link
Nice! 7°C cooler, that's a start! I guess I'll wait a bit more, then.Spacecomber - Wednesday, June 25, 2008 - link
Although I'm somewhat dubious about dual card solutions, I keep looking at the benchmarks and then at the prices for a couple of 8800 GTs.Perhaps, if the 4870 forces Nvidia to reduce their prices for the GTX 260 and the GTX 280, they will likewise bring down the price for the 9800 GX2. This is already the fastest single card solution, and it sells for less than the GTX 280. If this card starts selling for under $400 (maybe around $350), will this become Nvidia's best answer to the 4870?
Given the performance and the prices for the 4870 and the 9800 GX2 will Nvidia be able to price the GTX 280 competitively, or will it simply be vanity product - ridiculously priced and produced only in very small numbers?
It should be interesting to see where the prices for video cards end up over the course of the next few weeks.
kelmerp - Wednesday, June 25, 2008 - link
Better HD knickknacks? Better offloading/upscaling?chizow - Wednesday, June 25, 2008 - link
The HD4000 series have better HDMI sound support with 8ch LPCM over HDMI, but still can't pass uncompressed bistreams. Image quality hasn't changed as there isn't really any room to improve.kelmerp - Wednesday, June 25, 2008 - link
It would be nice to have a video card, where it doesn't matter how weak the current-gen processor is (say the lowliest celeron available), the card can still output 1080p HDTV without dropping any frames.Chaser - Wednesday, June 25, 2008 - link
Good to have back at the FRONT of the finish line.JPForums - Wednesday, June 25, 2008 - link
Ragarding the SLI scaling in Witcher:The GTX 280 SLI setup may be running into a bottleneck or driver issues, rather than seeing inherent scaling issues. Consider, the 9800 GTX+ SLI setup scales from 22.9 to 44.5. So the scaling isn't an inherent SLI scaling problem. Though it may point to scaling issues specific to the GTX 280, it is more likely that the problem lies elsewhere. I do, however, agree with your general statement that when CF is working properly, it tends to scale better. In my systems, it seems to require less CPU overhead.