GeForce GTS 150 vs Radeon R7 250

Intro

Compare those specifications to the Radeon R7 250, which has GPU core speed of 1000 MHz, and 1024 MB of GDDR5 RAM running at 1150 MHz through a 128-bit bus. It also is comprised of 384 Stream Processors, 24 TAUs, and 8 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250		65 Watts
GeForce GTS 150		141 Watts
	Difference: 76 Watts (117%)

Memory Bandwidth

In theory, the Radeon R7 250 is 130% quicker than the GeForce GTS 150 in general, because of its greater bandwidth. (explain)

Radeon R7 250		73600 MB/sec
GeForce GTS 150		32000 MB/sec
	Difference: 41600 (130%)

Texel Rate

The GeForce GTS 150 will be a lot (more or less 97%) more effective at AF than the Radeon R7 250. (explain)

GeForce GTS 150		47360 Mtexels/sec
Radeon R7 250		24000 Mtexels/sec
	Difference: 23360 (97%)

Pixel Rate

The GeForce GTS 150 should be quite a bit (more or less 48%) faster with regards to full screen anti-aliasing than the Radeon R7 250, and should be capable of handling higher resolutions better. (explain)

GeForce GTS 150		11840 Mpixels/sec
Radeon R7 250		8000 Mpixels/sec
	Difference: 3840 (48%)

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 largest amount of data (counted in MB per second) that can be transferred past the external memory interface in a second. It's calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This number is calculated by multiplying the total texture units by the core 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 per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output 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 max fill rate.