Left 4 Dead
Introduced in 2004, Valve’s Source engine continues to live on in new Valve games. At this point even newer Source games like Left 4 Dead are rarely GPU limited to a significant degree, but we keep it on here due to the fact that we’re expecting at least one more souped-up Source game next year’s in Portal 2.
Left 4 Dead is an interesting title as when we throw a slow enough card at it, the CPU limitations give way for a new set of limitations: texturing. The GTX 460 could barely break away from the 5770 here, putting the GTS 450 in a particularly precarious position. Unfortunately for the GTS 450, it falls well below the 5770 and is even outdone by the 5750 by a few frames per second. At 87fps at 1680 this is largely academic, but it showcases where a worst-case scenario might lie.
On the plus side, even at 1920x1200 with 8x anti-aliasing, the GTS 450 still delivers better than 60fps, offering a solid example of why just about anything can play Source engine games at this point.
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