Radeon HD 5870 vs Radeon R7 250X 2GB

Intro

Compare that to the Radeon R7 250X 2GB, which has core speeds of 1000 MHz on the GPU, and 1125 MHz on the 2048 MB of GDDR5 RAM. It features 640 SPUs along with 40 Texture Address Units and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250X 2GB		95 Watts
Radeon HD 5870		188 Watts
	Difference: 93 Watts (98%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 5870 will be 113% quicker than the Radeon R7 250X 2GB in general, because of its greater bandwidth. (explain)

Radeon HD 5870		153600 MB/sec
Radeon R7 250X 2GB		72000 MB/sec
	Difference: 81600 (113%)

Texel Rate

The Radeon HD 5870 will be quite a bit (about 70%) better at AF than the Radeon R7 250X 2GB. (explain)

Radeon HD 5870		68000 Mtexels/sec
Radeon R7 250X 2GB		40000 Mtexels/sec
	Difference: 28000 (70%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 5870 is a better choice, by far. (explain)

Radeon HD 5870		27200 Mpixels/sec
Radeon R7 250X 2GB		16000 Mpixels/sec
	Difference: 11200 (70%)

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 information (counted in megabytes per second) that can be moved over the external memory interface within a second. It is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's 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 can be processed in one second. This is worked out by multiplying the total texture units by the core speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record 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 core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.