At High quality (our common benchmark for all single-GPU cards) it can’t even surpass the GT 440 due to the lack of memory bandwidth, and at lower settings the 7750 is still 20% ahead. Of course it goes without saying that the GT 640 once again gets left in the dust here by its competition. So it’s definitely playable, but 1680 just isn’t going to happen. Only by finally backing off on the resolution to 1366x768 were we able to hit 60fps. 1680 is right out – even at minimum quality it could only hit 40fps in our test, which in a severe firefight means that framerates will bottom out at around 20fps. We ultimately had to iterate through several different settings to find something the GT 640 could handle with BF3. Even at low settings Battlefield 3 is a handful, making it difficult to run on low-end GPUs. Consequently it makes no attempt to shy away from pushing the graphics envelope, and pushing GPUs to their limits at the same time. Its popularity aside, Battlefield 3 may be the most interesting game in our benchmark suite for a single reason: it was the first AAA DX10+ game. Performance relative to the GT 440 also once again looks good, with the GT 640 improving on the GT 440 by 60%. At the same time the GT 640 is about as close to the 7750 as it’s ever going to get it still trails by over 15% but this is a far better showing than earlier with games like DiRT 3. Overall we’re able to run Portal 2 at 1680 with maximum quality and with MSAA, and still hit 60fps, marking the first time we’ve been able to use such high settings on this card. Portal 2 ends up being one of the better games for the GT 640, both on an overall basis and on a competitive basis. From a rendering standpoint Portal 2 isn't particularly geometry heavy, but it does make plenty of use of shaders. While Source continues to be a DX9 engine, and hence is designed to allow games to be playable on a wide range of hardware, Valve has continued to upgrade it over the years to improve its quality, and combined with their choice of style you’d have a hard time telling it’s over 7 years old at this point. Portal 2 continues to be the latest and greatest Source engine game to come out of Valve's offices. Portal 2, Battlefield 3, Starcraft II, Skyrim, & Civ V
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