GeForce GTS 450 1GB vs Radeon R7 250X

Intro

Compare those specifications to the Radeon R7 250X, which comes with a GPU core clock speed of 1000 MHz, and 1024 MB of GDDR5 RAM running at 1125 MHz through a 128-bit bus. It also is comprised of 640 SPUs, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250X		95 Watts
GeForce GTS 450 1GB		106 Watts
	Difference: 11 Watts (12%)

Memory Bandwidth

Theoretically speaking, the Radeon R7 250X will be 25% faster than the GeForce GTS 450 1GB overall, due to its higher data rate. (explain)

Radeon R7 250X		72000 MB/sec
GeForce GTS 450 1GB		57728 MB/sec
	Difference: 14272 (25%)

Texel Rate

The Radeon R7 250X will be much (about 60%) more effective at AF than the GeForce GTS 450 1GB. (explain)

Radeon R7 250X		40000 Mtexels/sec
GeForce GTS 450 1GB		25056 Mtexels/sec
	Difference: 14944 (60%)

Pixel Rate

The Radeon R7 250X will be much (about 28%) better at FSAA than the GeForce GTS 450 1GB, and should be capable of handling higher resolutions more effectively. (explain)

Radeon R7 250X		16000 Mpixels/sec
GeForce GTS 450 1GB		12528 Mpixels/sec
	Difference: 3472 (28%)

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 (measured in MB per second) that can be transferred across the external memory interface in one second. It is worked out by multiplying the interface width by the speed of its memory. If the card has DDR memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This is worked out by multiplying the total number of texture units by the core clock 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 applied in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.