Overclocking the GTX980M

cerebus

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The GTX 980M is extremely high performing out of the box already, but there is always more to gain if you’re brave enough. That’s right, today we will be overclocking a little bit.

Before doing this yourself, you should know that the drivers limit how high you can actually set your GPU frequency. Being a mobile GPU, you won’t have to worry about fan profiles or voltages though, as these are simply not adjustable – all you need to worry about is clock frequencies. No power limits, no fan profiles.
980m overclock.jpg

Test system:
  • MSI GT72
  • Intel Core i7-4700HQ
  • NVIDIA GeForce GTX 980M 8GB
  • 16GB DDR3-1600
First off, the stock base runs in 3DMark Fire Strike, 3DMark 11:
3dmarkstock.jpg
score.jpg
The 980M-equipped GT72 scores a cool 8207p in Fire Strike and over 11000 in 3DMark 11 on the performance preset – figures that even the high-end offerings on the desktop side just recently can’t match. For example, the same system with a GTX 580 wouldn’t reach these scores.

Never mind though – we were supposed to try out overclocking, so with Afterburner 4.0, we set core frequency as high as it would go (+135MHz or 1173MHz/1262MHz Boost on GPU and 6212MHz on the memory). The GPU had no problem with this frequency, while higher memory frequencies would crash. The results are even further improved performance, with little increase in graphics card temperature – the Fire Strike score increases from 8207 to 9107 points, a 10.97% increase in performance with no effort to speak of.
3dmarkclocked.jpg
score2.jpg
The 3DMark 11 scores also yield a nice boost of a bit over 600 points, or 5.55% at the same frequencies.

There is almost always free performance to gain from overclocking – just make sure your cooling is up for the job. In the GT72, these bumps in frequency don't load the cooling too much, so they work for pretty much everyday use.
 
I don't see the point in overclocking the fastest graphics card.
 
nvidia is being lame locking the mobile cards to 135+ , you can push further if unlock the bios :P

i have nice dell xps 15 which has gt 640m gddr5 which can easily do 1000 core but the max i can push is 884mhz, because if the 135+ limit. i do however get 900+ on the memory :P ( has same memory has gtx 660m just way underclocked)
 
Graphics card memory – how much is enough?
How much memory do you really need? With the introduction of the GTX 900 series graphics from NVIDIA, we’ve seen a leap in two things: performance, and especially on the mobile graphics side, memory size. Simply put, the higher your resolution is, the more memory you’re going to need in addition to high raw processing power. But how much?
For example, Futuremark recently updated its latest 3DMark to support 4K benchmarking. Trying to run this benchmark on any graphics card with what is now the de facto standard amount of graphics card memory, 2GB, will give you a really hard time with the FPS figures generally below 2 (yes, two) FPS in Game Test 2, whereas 3GB will be barely enough to get you by.
maxmem.png
This is with 4K (3840x2160) of course, and just one benchmark, but it gives you an indication of where things are heading. That’s why we’ve chosen to equip our GTX 970M and 980M graphics cards with double the amount you’d expect – future proofing, and for high-res external monitors.

A real-world example on the subject was written up by Swedish media NordicHardware on Nov 7th. During its testing of Call of Duty: Advanced Warfare, they discovered that the game, even with a perfectly normal 1080P (1920x1080) resolution, would use all graphics memory at its disposal, all 6GB of the NVIDIA GeForce Titan Black.
CoDAW_6GB.jpg
Other games are going in the same direction as well. Games such as Shadow of Mordor also require a whole lot of VRAM, also eclipsing the 4GB barrier with 1080P resolution (tests once more courtesy of NordicHardware):
mordor.png
With even regular games, 2GB of VRAM is barely enough right now, and is simply not going to be enough in a future that is closer than you might think. The high-resolution revolution is closing in fast, do you have enough graphics memory?
 
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