GeForce 920M vs GeForce GTS 250 1GB

Intro

Compare that to the GeForce GTS 250 1GB, which comes with a GPU core clock speed of 738 MHz, and 1024 MB of GDDR3 RAM set to run at 1100 MHz through a 256-bit bus. It also is comprised of 128 SPUs, 64 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the GeForce GTS 250 1GB will be 389% quicker than the GeForce 920M overall, because of its greater data rate. (explain)

GeForce GTS 250 1GB		70400 MB/sec
GeForce 920M		14400 MB/sec
	Difference: 56000 (389%)

Texel Rate

The GeForce GTS 250 1GB will be much (approximately 55%) better at texture filtering than the GeForce 920M. (explain)

GeForce GTS 250 1GB		47232 Mtexels/sec
GeForce 920M		30528 Mtexels/sec
	Difference: 16704 (55%)

Pixel Rate

The GeForce GTS 250 1GB should be a lot (more or less 55%) more effective at anti-aliasing than the GeForce 920M, and also capable of handling higher resolutions while still performing well. (explain)

GeForce GTS 250 1GB		11808 Mpixels/sec
GeForce 920M		7632 Mpixels/sec
	Difference: 4176 (55%)

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 max amount of data (counted in megabytes per second) that can be moved across the external memory interface in a second. The number is worked out by multiplying the card's interface width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better 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 processed per second. This is calculated by multiplying the total texture units by the core clock speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. 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 lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.