Radeon HD 5770 vs Radeon R9 M290X

Intro

Compare that to the Radeon R9 M290X, which comes with a clock frequency of 850 MHz and a GDDR5 memory frequency of 1200 MHz. It also features a 256-bit memory bus, and makes use of a 28 nm design. It is made up of 1280 SPUs, 80 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M290X		100 Watts
Radeon HD 5770		108 Watts
	Difference: 8 Watts (8%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 M290X should be 100% quicker than the Radeon HD 5770 in general, due to its higher bandwidth. (explain)

Radeon R9 M290X		153600 MB/sec
Radeon HD 5770		76800 MB/sec
	Difference: 76800 (100%)

Texel Rate

The Radeon R9 M290X is quite a bit (approximately 100%) more effective at texture filtering than the Radeon HD 5770. (explain)

Radeon R9 M290X		68000 Mtexels/sec
Radeon HD 5770		34000 Mtexels/sec
	Difference: 34000 (100%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R9 M290X is a better choice, by far. (explain)

Radeon R9 M290X		27200 Mpixels/sec
Radeon HD 5770		13600 Mpixels/sec
	Difference: 13600 (100%)

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 max amount of data (in units of megabytes per second) that can be transported across the external memory interface in a second. The number is worked out by multiplying the bus width by its memory clock speed. If the card has DDR memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster 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 can be applied in one second. This is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.