Radeon HD 5770 vs Radeon R7 250X 2GB

Intro

Compare those specs to the Radeon R7 250X 2GB, which features 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 TAUs and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250X 2GB		95 Watts
Radeon HD 5770		108 Watts
	Difference: 13 Watts (14%)

Memory Bandwidth

The Radeon HD 5770 should in theory be a bit faster than the Radeon R7 250X 2GB in general. (explain)

Radeon HD 5770		76800 MB/sec
Radeon R7 250X 2GB		72000 MB/sec
	Difference: 4800 (7%)

Texel Rate

The Radeon R7 250X 2GB is a bit (approximately 18%) more effective at AF than the Radeon HD 5770. (explain)

Radeon R7 250X 2GB		40000 Mtexels/sec
Radeon HD 5770		34000 Mtexels/sec
	Difference: 6000 (18%)

Pixel Rate

The Radeon R7 250X 2GB will be a bit (about 18%) better at anti-aliasing than the Radeon HD 5770, and also will be capable of handling higher resolutions without losing too much performance. (explain)

Radeon R7 250X 2GB		16000 Mpixels/sec
Radeon HD 5770		13600 Mpixels/sec
	Difference: 2400 (18%)

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 megabytes per second) that can be transferred over the external memory interface in one second. The number is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This figure is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the core speed of the card. 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 fill rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.