7970m performance with a 720qm?

Anyone got the above m15x? and how is performance in certain games such as BF3?

I will be upgrading to the 920xm soon, going to purchase a Clevo 7970m to put in it.

thanks!

 

I wouldn't upgrade to the 920XM and a 7970M in that laptop. You'll be pushing the limits with your 150w adapter if you do so and you won't be able to overclock at all... so I wouldn't in all honesty. I'd just keep your current CPU and upgrade the GPU. You'll be fine with that thing. It's plenty quick to keep up with the 7970M.

 

I have a 240w adapter though? I've seen many others running a 920xm and 7970m and it being fine?

Anyway I asked what performance with BF3 was like, have you tried it?

 

Smooth at ultra settings. Though I'm with a 940XM.

 

You should be fine with that and the 240W one.

 

BF3 needs more power than the 720qm can provide at times. So actually yeah mated with the 7970M it will be the bottleneck.

 

Keep in mind. The clevo card won't work with our display port out in windows. And you'll need to use hwinfo64 for fan control else your cpu and gpu fans will stay at max. This is with the clevo 7970.

The 150w limit is on the m15x motherboard found by svl7 and the techinferno crew. Due to this, you'll need to undervolt bios on the 7970m, I believe most users find 0.95v works well. The 240w adapter works but all it does is put less stress on the psu which means less heat.

Post based on that I have a clevo 7970m and a xm in a m15

Performance is excellent and very near a 3610qm with 7970m.

Sent from my DROID BIONIC using Tapatalk 2

 

Nice, I can actually get a dell version of the 7970m, i found one on ebay, flashing the vBIOS is easy aint it? so i defo need to undervolt the gpu?

How is performance in BF3?

thanks

 

I find I'm consistently between 45-60fps max settings playing online. I'm also running maxed out and my xm oced a bit

Sent from my DROID BIONIC using Tapatalk 2

 

Hey Daverish, I remember you explaining this to me as well.

I'm about to get the exact set up as you, a 920XM and a Dell 7970m which would arrive in a week or two. I suppose with the 150w limit in mind, did you underclock and/or undervolt your 7970m?

 

Undervolt only with stock clocks. I find the card powerful enough without needing overclock.

With this setup it took a little playing around to find my xm overclock settings with the 7970m due to the 150w. Overall its definitely worth it. I feel this setup and handle most games maxed out or near maxed out with very good fps.

Sent from my DROID BIONIC using Tapatalk 2

 

Just undervolted mine to 1.0v from the stock 1.05 and that's all it took to stop the throttling for me! I am only running a 720qm though. Haven't had a game I couldn't max so far. I have a post in the M15x forum here from a couple days ago with all the links to the modded vbios and the guide on how to flash the vbios. This only works on dell cards from what I am reading.

 

Underclocking isn't necessary. 0.95V will run stock clocks perfectly stable. This also leaves a little headroom for your XM overclock which is advised in BF3. I recommend 23x to give yourself a nice 3ghz clockspeed across all cores.