Featured Articles

Analysts expect ARM to do well next year

Analysts expect ARM to do well next year

British chip designer ARM could cash in on the mobile industry's rush to transition to 64-bit operating systems and hardware.

Huawei and Xiaomi outpace Lenovo, LG in smartphone market

Huawei and Xiaomi outpace Lenovo, LG in smartphone market

Samsung has lost smartphone market share, ending the quarter on a low note and Xiaomi appears to be the big winner.

Intel Broadwell 15W coming to CES

Intel Broadwell 15W coming to CES

It looks like Intel will be showing off its 14nm processors, codenames Broadwell, in a couple of weeks at CES 2015.

Gainward GTX 980 Phantom reviewed

Gainward GTX 980 Phantom reviewed

Today we’ll be taking a closer look at the recently introduced Gainward GTX 980 4GB with the company’s trademark Phantom cooler.

Zotac ZBOX Sphere OI520 barebones vs Sphere Plus review

Zotac ZBOX Sphere OI520 barebones vs Sphere Plus review

Zotac has been in the nettop and mini-PC space for more than four years now and it has managed to carve…

Frontpage Slideshow | Copyright © 2006-2010 orks, a business unit of Nuevvo Webware Ltd.
Friday, 16 July 2010 16:53

EVGA GTX 460 SLI vs GTX 480 - 3. GPU Tmperatures, Power Consumption, Noise Levels

Written by Sanjin Rados

Review: Faster and more quiet



Hot summer days are not quite graphics-friendly and while our advice in the case of GTX 480 would be to put your computer in a fridge or move to the North Pole, the GTX 460 cards in SLI mode had no problems with overheating. As you probably know, GF104 (40nm ) is based on Fermi architecture but it packs less transistors compared to the GF100, which means less heat.

Nvidia’s reference cooling does a great job this time around, and there’s really no need for non-reference cooling – not even in the case of assembling 2-way SLI.

Test 1

We intentionally put EVGA’s GTX 460 768MB cards in the worst possible position – with virtually no free space between them. This would mean that airflow will be hindered in between the cards, and that the upper card will probably run hotter.


Indeed, the upper card ran hotter because its fan draws already hot air from the card below. In idle mode, we recorded a 7°C difference between the GPUs.

We tested GTX 460 SLI at reference clocks (675MHz GPU/3600MHz memory) as well as on Superclocked clocks (763MHz GPU/ 3800MHz memory). Note that regardless of 3D clocks, idle operation results in the card downclocking to 50MHz GPU and 67MHz memory.




FurMark testing resulted in 16°C difference between the GPUs. Maximum temperatures on the upper card at Superclocked clocks (763MHz/3800MHz) were at 84°C, whereas the bottom card hit maximum 68°C. At reference clocks, the temperatures were 2°C lower on each GPU, as you can see from the picture below.



Test 2

We cut the cards some slack in our second test and gave them some breathing room by placing them 2 slots apart.


Compared to Test 1 temperatures, our idle-operation measurements were 3°C lower. FurMark testing was also cooler, and we recorded 10°C lower temperatures. This means that maximum temperatures were not at 84°C but 74°C.



As far as noise in 3D goes, 2-way SLI with GTX 460 768MB cards is much quieter than a single GTX 480.

Unlike the GTX 460 cards which weren’t noticeably loud, the GTX 480’s fan was so loud in FurMark that we couldn’t wait for it to end. Furthermore, not even all this noise and fan-work managed to push temperatures below 93°C.


GTX 460 768MB card has the same TDP – 150W. Our entire rig without the monitor drew up to 299W with one EVGA GTX 460 768MB Superclocked. Two GTX 460 768MB Superclocked cards in SLI mode pushed the consumption up to 492W.

Two GTX 465 768MB cards in SLI mode resulted in consumption of up to 465W whereas the GTX 480 managed to top this – 494W was the final figure.
Idle operation with the GTX 460 SLI resulted in our rig drawing about 160W, whereas the GTX 480 consumed about 168W.


(Page 3 of 10)
Last modified on Friday, 16 July 2010 20:23
blog comments powered by Disqus


Facebook activity

Latest Commented Articles

Recent Comments