Featured Articles

Analyst reveals Apple Watch spec

Analyst reveals Apple Watch spec

An analyst has examined the Apple Watch supply chain in an effort to ascertain the exact spec of Cupertino’s new gadget…

More...
Nvidia's first 20nm product is a mobile SoC

Nvidia's first 20nm product is a mobile SoC

For much of the year we were under the impression that the second generation Maxwell will end up as a 20nm…

More...
Nvidia GTX 980 reviewed

Nvidia GTX 980 reviewed

Nvidia has released two new graphics cards based on its latest Maxwell GPU architecture. The Geforce GTX 970 and Geforce GTX…

More...
Nvidia adjusts GTX 980 and GTX 970 pricing

Nvidia adjusts GTX 980 and GTX 970 pricing

It appears that Nvidia has been feeling the pulse of the market and took some note from comments regarding the original…

More...
PowerColor TurboDuo R9 285 reviewed

PowerColor TurboDuo R9 285 reviewed

Today we will take a look at the PowerColor TurboDuo Radeon R9 285. The card is based on AMD’s new…

More...
Frontpage Slideshow | Copyright © 2006-2010 orks, a business unit of Nuevvo Webware Ltd.
Thursday, 05 June 2014 11:03

EVGA GTX 780 Classified reviewed - Overclocking

Written by Sanjin Rados

 

 evga-classified-gtx-780-thumbtop-value-2008-lr

Review: Enough power to defeat GTX 780 Ti

Naturally, OC results greatly depend on quality of graphics chips, since not all parts will handle extreme clocks the same way. Still, even though all graphics chips aren’t equal, you can bet that the chips running GTX 780 Classified cards will work better than average. 

The GTX 780 Classified comes with a factory overclock, where the base GPU clock ended up at 993MHz (Ref. Base clock is 863MHz). Using the default fan and voltage settings as defined in the VGA BIOS we were able to raise Base GPU clock for additional 130MHz. After our little tweak, combined with GPU Boost 2.0 we saw the GTX 780 Classified inching toward the 1280MHz+ range (at stock Classified clocks the boost clock was 1163MHz).

gtx 780 classified evga LOAD 1280Mhz

Of course, the card requires higher voltages to attain higher GPU clocks. Before we started tinkering with voltage settings, we took a peek at some readings. With an overclock of 130MHz the card stayed under 75 degrees Celsius and the fan was hitting 72% or 2360RPM. At stock clocks the fan usually runs at 63% or 2085RPM. The card was not very loud at 72%.

As we already mentioned EVBOT is no longer available directly from EVGA and if you do not have one, than it will be hard to find. Luckily the overclocker community came up with software that can easily replace the add-on. The GTX Classified Controller allows users to jack up the GPU voltage to 1.65v with no hardware mods. FBVDD and PEXVDD voltages can be increased to 1.8v and 1.242v respectively. EVGA does not official endorse the use of this clever tool. We advise users to stick to GPU voltages of up to 1.35v.

gtx classified controller

As the screenshot below indicates, the GPU voltage in PrecisionX can be increased only by a pointless 38mV.

gtx 780 classified evga default precisionX voltage

The GTX 780 Classified can easily be overclocked for fun or for superior performance. If you are looking to get higher frame rates, you need to overclock the memory, too.

A simple memory overclock boosted Sleeping Dogs frame rates by 5 percent.

gtx 780 classified evga gpuz oc memory

gtx 780 classified evga default precisionX memory oc
Only Memory OC

res oc memory

For more serious overclocking we decided to push the fan to 95% RPM and at 1.27v for the GPU we managed to attain 1380MHz. However, the clock started dropping off soon. We are confident that the card can sustain such clocks with superior cooling, i.e. a good water block or even LN2 but that’s  something for extreme overclockers rather than gamers.

gtx 780 classified evga default precisionX oc2

With the GPU and memory overclocked, we got the following results.

res oc gpu plus memory

(Page 14 of 16)
Last modified on Friday, 06 June 2014 06:53
blog comments powered by Disqus

 

Facebook activity

Latest Commented Articles

Recent Comments