GeForce GTS 250 512MB vs Radeon R7 M265

Intro

Compare all of that to the Radeon R7 M265, which features GPU core speed of 725 MHz, and 2048 MB of DDR3 RAM set to run at 1000 MHz through a 128-bit bus. It also is made up of 384 Stream Processors, 24 TAUs, and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce GTS 250 512MB should theoretically perform much faster than the Radeon R7 M265 overall. (explain)

GeForce GTS 250 512MB		70400 MB/sec
Radeon R7 M265		32000 MB/sec
	Difference: 38400 (120%)

Texel Rate

The GeForce GTS 250 512MB will be a lot (approximately 171%) more effective at AF than the Radeon R7 M265. (explain)

GeForce GTS 250 512MB		47232 Mtexels/sec
Radeon R7 M265		17400 Mtexels/sec
	Difference: 29832 (171%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTS 250 512MB is a better choice, by far. (explain)

GeForce GTS 250 512MB		11808 Mpixels/sec
Radeon R7 M265		5800 Mpixels/sec
	Difference: 6008 (104%)

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 information (in units of MB per second) that can be transferred past the external memory interface in one second. It's calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This number is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.