GeForce GTS 450 1GB vs GeForce GTX 960M

Intro

Compare all of that to the GeForce GTX 960M, which features clock speeds of 1096 MHz on the GPU, and 1000 MHz on the 2048 MB of GDDR5 RAM. It features 640 SPUs along with 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 960M		65 Watts
GeForce GTS 450 1GB		106 Watts
	Difference: 41 Watts (63%)

Memory Bandwidth

Performance-wise, the GeForce GTX 960M should theoretically be a little bit better than the GeForce GTS 450 1GB in general. (explain)

GeForce GTX 960M		64000 MB/sec
GeForce GTS 450 1GB		57728 MB/sec
	Difference: 6272 (11%)

Texel Rate

The GeForce GTX 960M is much (about 75%) more effective at texture filtering than the GeForce GTS 450 1GB. (explain)

GeForce GTX 960M		43840 Mtexels/sec
GeForce GTS 450 1GB		25056 Mtexels/sec
	Difference: 18784 (75%)

Pixel Rate

The GeForce GTX 960M will be much (about 40%) better at full screen anti-aliasing than the GeForce GTS 450 1GB, and will be capable of handling higher resolutions more effectively. (explain)

GeForce GTX 960M		17536 Mpixels/sec
GeForce GTS 450 1GB		12528 Mpixels/sec
	Difference: 5008 (40%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the largest amount of information (counted in MB per second) that can be transferred over the external memory interface in one second. The number is calculated by multiplying the bus width by its memory clock speed. If it uses DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This figure is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.