GeForce 920M vs GeForce GTX 650

Intro

Compare those specs to the GeForce GTX 650, which features core speeds of 1058 MHz on the GPU, and 1250 MHz on the 1024 MB of GDDR5 memory. It features 384 SPUs as well as 32 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

GeForce GTX 650		2263 points
GeForce 920M		1180 points
	Difference: 1083 (92%)

Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the GeForce GTX 650 will be 456% quicker than the GeForce 920M overall, due to its greater bandwidth. (explain)

GeForce GTX 650		80000 MB/sec
GeForce 920M		14400 MB/sec
	Difference: 65600 (456%)

Texel Rate

The GeForce GTX 650 will be just a bit (about 11%) more effective at texture filtering than the GeForce 920M. (explain)

GeForce GTX 650		33856 Mtexels/sec
GeForce 920M		30528 Mtexels/sec
	Difference: 3328 (11%)

Pixel Rate

The GeForce GTX 650 will be a lot (about 122%) more effective at anti-aliasing than the GeForce 920M, and also will be capable of handling higher resolutions without slowing down too much. (explain)

GeForce GTX 650		16928 Mpixels/sec
GeForce 920M		7632 Mpixels/sec
	Difference: 9296 (122%)

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: Bandwidth is the max amount of data (in units of megabytes per second) that can be transferred across the external memory interface in a second. The number is calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This number is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.