The new Acer 772g - how much scope is there to overclock?

[b_boult]

Hello guys,

I am considering buying this laptop towards the end of the year:

http://www.notebookcheck.net/Review-Acer-Aspire-V3-772G-747A321-Notebook.93916.0.html

As such I was wondering, has anyone on this forum bought one of these already and tried to overclock it? If so, how much extra performance have you managed to get out of the machine? For instance, could you play Bioshock: Infinite and Crisis 3 in max settings at 30fps, with only the standard fan and without a discernable increase in heat? Without the overclock, those games average 20 and 13 fps respectively on max settings.

Many thanks.

 

[thepharcyde]

Better laptops for the money. Look at the Lenovo Y510p or a refurb Y500 and source an additional GT650m for SLI. O/C should see +30 fps with most games at max settings (+30 for high).

On a secondary note unless I'm seeing solid 60 fps I cannot play most games, but my gaming is somewhat limited to racing games.

 

[oweneades]

Hello guys,

I am considering buying this laptop towards the end of the year:

http://www.notebookcheck.net/Review-Acer-Aspire-V3-772G-747A321-Notebook.93916.0.html

As such I was wondering, has anyone on this forum bought one of these already and tried to overclock it? If so, how much extra performance have you managed to get out of the machine? For instance, could you play Bioshock: Infinite and Crisis 3 in max settings at 30fps, with only the standard fan and without a discernable increase in heat? Without the overclock, those games average 20 and 13 fps respectively on max settings.

Many thanks.

Crysis 3 and Bioshock will have to have a few settings turned down but should be perfectly playable at "high" settings on the 760m. Check out reviews of the MSI GE40 which is basically the same as this laptop in terms of raw gaming hardware.

The 760m should be pretty overclockable assuming the bios hasn't been hamstrung by a lower than normal 3D voltage.

Reading reviews of any laptop with a 765m will give you and idea of the 760m overclocked (the 765m is nothing more than a clocked 760m).

There are laptops available which are more potent than this V3 for reasonable prices. You would have to google but there are options of i7 3630QM / 670MX (960SP/192bit memory interface) for around £880. For reference the 670MX is in essence a downclocked 770M. Check reviews of laptops with the latter and taken 10-15% off the FPS to get an idea of how the 670MX would perform.

Low end SLI is an option (assuming you can actually get a second card), but it isn't something I am particularly interested in. The 760-765m will perform largly similar to 650m GDDR5 SLI but without any requirement for SLI profiles or issues with scaling.

EDIT: Just noticed that the 772G is also appears to available with a 750m (unless the site made a typo). Watch out for this distinction as the 750m is just a 650m GDDR5 rebadged. No doubt there are a load of different "772G" models with varying suffixes.

 

[b_boult]

Reading reviews of any laptop with a 765m will give you and idea of the 760m overclocked (the 765m is nothing more than a clocked 760m).

Well here's the thing, the GTX 765m has more transistors than the GTX 760m - 3540 Million and 2540 Million respectively. In other words, *is it* really the same chip? I know they're both supposed to be GK106s, but if the hardware is different, that doesn't make much sense to me (though granted, I have zero experence in this field). If the components were the same, I'd have no qualms about upping the core speed of the 760m to 765m levels, but as they're not, I'm concerned. There's also the fact that Acer seem to have reduced the core speed of the GPU (657MHz was NVIDIA's recommendation, but in this laptop it has been reduced to 628 MHz - which suggests to me that there may have been a problem with overheating...) I'll have a look at your other laptop recommendations later

 

[oweneades]

Well here's the thing, the GTX 765m has more transistors than the GTX 760m - 3540 Million and 2540 Million respectively. In other words, *is it* really the same chip? I know they're both supposed to be GK106s, but if the hardware is different, that doesn't make much sense to me (though granted, I have zero experence in this field). If the components were the same, I'd have no qualms about upping the core speed of the 760m to 765m levels, but as they're not, I'm concerned. There's also the fact that Acer seem to have reduced the core speed of the GPU (657MHz was NVIDIA's recommendation, but in this laptop it has been reduced to 628 MHz - which suggests to me that there may have been a problem with overheating...) I'll have a look at your other laptop recommendations later

Both the 760m and 765m are 768SP/128bit parts.

For reference:

GTX760m

GTX765m

Why they are listing a different transistor count is beyond me.

Acer dropping the GPU clocks is a little worrying from a outright performance point of view. Personally I wouldn't bother with it and look straight at Clevo based laptops (765m model available on OCUK) or the MSI GE40.