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Geforce GT740M Overclock

post #1 of 44
Thread Starter 
I'd just like to share my experience getting the most out of this obscure card. There doesn't seem to be much info about it yet, so maybe this will help someone else get started. smile.gif

Details beforehand:
-Lenovo Thinkpad Edge E531 (cheap laptop, excellent hardware for the price);
-Win7 x64 Ultimate, thoroughly cleaned of rubbish software like all the crap Intel installs, stupid graphics disabled, etc. Consider the OS thoroughly performance-optimized. Seems to have above average cooling and such too;
-2.5GHz Intel Core i5 3320M;
-8GB DDR3 RAM (4GB 800MHz + 4GB 1366MHz -> 4GB 666MHz), no page file;
-Integrated Intel graphics beaten up and hounded into a corner so it stays out of the way of the real GPU;
-GT740M configured for mostly performance, most options left to the application to decide;

If any other details are relevant, just tell me to post them.

I used Nvidia Inspector for the overclocking, because MSI Afterburner was being glitchy (and I hate software that's too big for what it does, has stupid skins and custom window decoration, etc).

I tried incrementing the settings piece by piece, running Heaven benchmark in between each increment to make sure nothing was wrong.

Base Clock: +135MHz (max allowed by Inspector)
Memory Clock: +260MHz (rendered image becomes glitchy at 280)
Voltage: +25mV (37.5 and 50 gave no improvement, I stopped trying at 50)

The final result is about a 20-25% boost in Heaven benchmark and World of Tanks with little temperature gain.

core memory volt temp fps
000 000 00 68 19
135 140 25 73 22
135 220 25 72 24
135 260 25 75 25
135 260 37 77 25
post #2 of 44
I almost got that machine for my girlfriend but get the GE40-2OC instead for the price (in Korea)

What are your impressions of it? It looked very solid when I looked at it
    
CPUMotherboardGraphicsRAM
i7 2670 @ 2.8Ghz m4600 m5100 @ 1100c/1500m 16GB DDR3 1333Mhz 
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c300 128GB SSD 2TB FireCuda 7mm 2TB Firecuda 7mm 1TB 5400rpm 
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750GB 5400rpm Windows 10 x64  1920x1080 @90hz 150w 
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i7 2670 @ 2.8Ghz m4600 m5100 @ 1100c/1500m 16GB DDR3 1333Mhz 
Hard DriveHard DriveHard DriveHard Drive
c300 128GB SSD 2TB FireCuda 7mm 2TB Firecuda 7mm 1TB 5400rpm 
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750GB 5400rpm Windows 10 x64  1920x1080 @90hz 150w 
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post #3 of 44
Thread Starter 
It's an awesome laptop. smile.gif Everything about this one is done well, much better than the average crap like Acer and such.

Very good cooling, excellent plating (the screws stick to the panels, you can easily open the thing up without wearing it down or breaking stuff), the battery lasts forever, it's very compact especially for its screen resolution, the screen itself is anti-glare and such, the entire thing is very sturdy yet lightweight, it has all the ports it needs and they're in the right places (not on the back or front like in some dumb designs), the permanent hardware like CPU and GPU is very good and the 90W power supply is just right (plenty of power but not total overkill like some desktops have).

My only regrets are
-the touchpad is kinda weird: it's a little too big so you accidentally move or click when doing other stuff. The entire thing is a huge button you can press down, which is just weird but not a hinderance;
-the audio jack is the single-jack smartphone model (in+out on 1 jack) instead of just a regular 2-jack connection. Because screw standards, I suppose. I'm starting to see more and more headsets with that kind of connector though;
-the keyboard is too minimal for me since I'm Belgian and need to type crap like French. I absolutely wanted a QWERTY instead of this stupid AZERTY standard we have here, but it came at the cost of no longer having accents and some special symbols (not even a Euro) we need to type often. For my programming however, this particular layout is perfect because all the types of brackets and such are grouped logically instead of randomly like on AZERTY;
-again on the keyboard: the Fn keys are toggled to be "special buttons" by default at boot and there's no option anywhere to change this, you need to press Fn-Esc (Fn-lock) to make them regular Fn keys. FSM knows why;
-plenty of crap pre-installed, like Intel Management Instrumentation. Getting rid of it is no biggy though and there's not a laptop in the world they don't do that to anyway.

The downsides are all pretty minor and luckily for you only Belgians and French are screwed by the keyboard smile.gif
Edited by Marnes - 2/21/14 at 10:43am
post #4 of 44
Thread Starter 
On the topic of overclocking, I started experiencing some glitches in World of Tanks while Heaven worked just fine. The settings might be too high after all, but I dunno when I'll experiment some more.
post #5 of 44
Yeah the soldered CPU was the deal breaker for me, as since it was for my gf I wanted to make sure it was either future proof for another 5 years at least or have enough grunt to not matter.

The audio jack wasnt an issue for my girlfriend since her iphone headset is practically graphed to her head anyways lol, but I think it is just trying to be supportive of mobile users and that laptop is somewhere in the middle of casual to power user in my opinion
    
CPUMotherboardGraphicsRAM
i7 2670 @ 2.8Ghz m4600 m5100 @ 1100c/1500m 16GB DDR3 1333Mhz 
Hard DriveHard DriveHard DriveHard Drive
c300 128GB SSD 2TB FireCuda 7mm 2TB Firecuda 7mm 1TB 5400rpm 
Hard DriveOSMonitorPower
750GB 5400rpm Windows 10 x64  1920x1080 @90hz 150w 
Mouse
Corsair M40 
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CPUMotherboardGraphicsRAM
i7 2670 @ 2.8Ghz m4600 m5100 @ 1100c/1500m 16GB DDR3 1333Mhz 
Hard DriveHard DriveHard DriveHard Drive
c300 128GB SSD 2TB FireCuda 7mm 2TB Firecuda 7mm 1TB 5400rpm 
Hard DriveOSMonitorPower
750GB 5400rpm Windows 10 x64  1920x1080 @90hz 150w 
Mouse
Corsair M40 
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post #6 of 44
Thread Starter 
I've found that I've had to decrease the settings a bit - WoT doesn't seem to take kindly to overclocks and tends to crash.

Core: 115MHz
Memory: 240Mhz
Voltage: 0mV

Still gets me about 20% more fps.
post #7 of 44
Just gotta find that sweet spot thumb.gif
    
CPUMotherboardGraphicsRAM
i7 2670 @ 2.8Ghz m4600 m5100 @ 1100c/1500m 16GB DDR3 1333Mhz 
Hard DriveHard DriveHard DriveHard Drive
c300 128GB SSD 2TB FireCuda 7mm 2TB Firecuda 7mm 1TB 5400rpm 
Hard DriveOSMonitorPower
750GB 5400rpm Windows 10 x64  1920x1080 @90hz 150w 
Mouse
Corsair M40 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
i7 2670 @ 2.8Ghz m4600 m5100 @ 1100c/1500m 16GB DDR3 1333Mhz 
Hard DriveHard DriveHard DriveHard Drive
c300 128GB SSD 2TB FireCuda 7mm 2TB Firecuda 7mm 1TB 5400rpm 
Hard DriveOSMonitorPower
750GB 5400rpm Windows 10 x64  1920x1080 @90hz 150w 
Mouse
Corsair M40 
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post #8 of 44
Thread Starter 
Quote:
Originally Posted by TheReciever View Post

Just gotta find that sweet spot thumb.gif
Yeah, I'm still looking... Kind of annoying that I end up crashing in the middle of a WoT fight every time.
post #9 of 44
Folding@Home is a great method for testing stability, dont know a harder application to run
    
CPUMotherboardGraphicsRAM
i7 2670 @ 2.8Ghz m4600 m5100 @ 1100c/1500m 16GB DDR3 1333Mhz 
Hard DriveHard DriveHard DriveHard Drive
c300 128GB SSD 2TB FireCuda 7mm 2TB Firecuda 7mm 1TB 5400rpm 
Hard DriveOSMonitorPower
750GB 5400rpm Windows 10 x64  1920x1080 @90hz 150w 
Mouse
Corsair M40 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
i7 2670 @ 2.8Ghz m4600 m5100 @ 1100c/1500m 16GB DDR3 1333Mhz 
Hard DriveHard DriveHard DriveHard Drive
c300 128GB SSD 2TB FireCuda 7mm 2TB Firecuda 7mm 1TB 5400rpm 
Hard DriveOSMonitorPower
750GB 5400rpm Windows 10 x64  1920x1080 @90hz 150w 
Mouse
Corsair M40 
  hide details  
Reply
post #10 of 44
Thread Starter 
Quote:
Originally Posted by TheReciever View Post

Folding@Home is a great method for testing stability, dont know a harder application to run
The weird thing is that, in Heaven benchmark, I could use the max settings from the OP without any problems. Only WoT so far is dragging me down to 100/200/0 (admittedly I stopped using any overclock after I made the thread until just now). It seems to be different for each game/program.
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