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.

More...
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.

More...
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.

More...
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.

More...
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…

More...
Frontpage Slideshow | Copyright © 2006-2010 orks, a business unit of Nuevvo Webware Ltd.
Tuesday, 07 August 2012 16:59

Point of View/TGT GTX 680 4GB Ultra Charged reviewed - Overclocking

Written by Sanjin Rados

uc-4gb-thumbrecommended08 75

Review: Silent, OCed card with extra headroom

We must admit that we had great expectations when it comes to overclocking, since TGT claims it used handpicked low leakage chips. Such chips do better with auto overclocking and tend to deliver higher maximum clocks, but should provide superior overclocking headroom as well.

Overclocking the memory was quite interesting, seeing as how the card has 4GB of memory. Naturally, doubling the number of memory chips doubles the chance of one of them turning out overclocking unfriendly, but luckily, all of them ran flawlessly, even after our 225MHz overclock (900MHz effectively).

gpuz oc

We’ve noticed that the Power Target is a bit higher than on the reference design, but the voltage was left at reference values.

precision

precision-oc
Before we move on, we should say that we left the fans in AUTO mode. The cooler ran so well that there was simply no need for it and the fans remained quiet even after our overclocking. Thermal throttling occurs at above 79°C, but the GTX 680 Ultra Charged never exceeded 72°C – that’s right, not even after overclocking.  

Squeezing out maximum clocks, and in turn performance, from the GK104 requires a lot of attention. Below is a clear example of when to use the Power Target slider.

Once we overclocked the GPU by +70MHz, we noticed that auto-overclocking figures tend to oscillate somewhat, as you can see on the picture below. Quality GPU and cooling prevent more serious changes but we chose to stabilize the clocks by dragging the Power Target slider far right, allowing for maximum TDP. It worked and, as you can see from the second picture below, the GPU clock is nailed to 1269MHz.

crysis memory 1835MHz gpu 1269 default powertarget

crysis memory 1835MHz gpu 1269 power target max

The next photo proves that TGT really chose low leakage chips. Not even 100MHz extra turned out too much for this card. The maximum auto-overclock was 1289MHz, and as you can see from the picture below, the GPU ran at this clock the entire time.

crysis memory 1835MHz gpu 1289 power target max

We didn’t have much time on our hands and thus couldn’t check, but we’re pretty sure you could squeeze out a bit more from this card.

crysis2 2

metro2

(Page 10 of 13)
Last modified on Tuesday, 07 August 2012 20:28
blog comments powered by Disqus

 

Facebook activity

Latest Commented Articles

Recent Comments