GeForce GTS 250 1GB vs Radeon R7 M265

Intro

Compare those specifications to the Radeon R7 M265, which uses a 28 nm design. AMD has set the core frequency at 725 MHz. The DDR3 memory is set to run at a frequency of 1000 MHz on this specific model. It features 384 SPUs along with 24 Texture Address Units and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the GeForce GTS 250 1GB should be 120% quicker than the Radeon R7 M265 overall, because of its higher data rate. (explain)

GeForce GTS 250 1GB		70400 MB/sec
Radeon R7 M265		32000 MB/sec
	Difference: 38400 (120%)

Texel Rate

The GeForce GTS 250 1GB should be quite a bit (approximately 171%) more effective at anisotropic filtering than the Radeon R7 M265. (explain)

GeForce GTS 250 1GB		47232 Mtexels/sec
Radeon R7 M265		17400 Mtexels/sec
	Difference: 29832 (171%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTS 250 1GB is a better choice, by a large margin. (explain)

GeForce GTS 250 1GB		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: Memory bandwidth is the maximum amount of data (in units of MB per second) that can be transported across the external memory interface within a second. It's calculated by multiplying the bus width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better 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 number of texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.