GeForce 8500 GT vs Radeon R7 250X

Intro

Compare all of that to the Radeon R7 250X, which has a core clock frequency of 1000 MHz and a GDDR5 memory speed of 1125 MHz. It also features a 128-bit bus, and makes use of a 28 nm design. It is made up of 640 SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8500 GT		45 Watts
Radeon R7 250X		95 Watts
	Difference: 50 Watts (111%)

Memory Bandwidth

Theoretically speaking, the Radeon R7 250X will be 463% faster than the GeForce 8500 GT in general, because of its higher bandwidth. (explain)

Radeon R7 250X		72000 MB/sec
GeForce 8500 GT		12800 MB/sec
	Difference: 59200 (463%)

Texel Rate

The Radeon R7 250X should be quite a bit (more or less 1011%) faster with regards to texture filtering than the GeForce 8500 GT. (explain)

Radeon R7 250X		40000 Mtexels/sec
GeForce 8500 GT		3600 Mtexels/sec
	Difference: 36400 (1011%)

Pixel Rate

If using a high resolution is important to you, then the Radeon R7 250X is the winner, by far. (explain)

Radeon R7 250X		16000 Mpixels/sec
GeForce 8500 GT		1800 Mpixels/sec
	Difference: 14200 (789%)

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 information (measured in megabytes per second) that can be transported past the external memory interface in one second. The number is worked out by multiplying the interface width by its memory clock speed. If it uses DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the graphics 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 maximum number of pixels the video card could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.