Radeon HD 4770 vs Radeon R7 M260

Intro

Compare those specs to the Radeon R7 M260, which comes with a GPU core clock speed of 715 MHz, and 2048 MB of DDR3 RAM running at 1000 MHz through a 64-bit bus. It also features 384 SPUs, 24 Texture Address Units, and 8 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically, the Radeon HD 4770 should be quite a bit faster than the Radeon R7 M260 in general. (explain)

Radeon HD 4770		51200 MB/sec
Radeon R7 M260		16000 MB/sec
	Difference: 35200 (220%)

Texel Rate

The Radeon HD 4770 will be quite a bit (more or less 40%) better at AF than the Radeon R7 M260. (explain)

Radeon HD 4770		24000 Mtexels/sec
Radeon R7 M260		17160 Mtexels/sec
	Difference: 6840 (40%)

Pixel Rate

The Radeon HD 4770 should be quite a bit (more or less 110%) more effective at FSAA than the Radeon R7 M260, and also able to handle higher screen resolutions more effectively. (explain)

Radeon HD 4770		12000 Mpixels/sec
Radeon R7 M260		5720 Mpixels/sec
	Difference: 6280 (110%)

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 (measured in megabytes per second) that can be transported across the external memory interface within a second. It's worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This number is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.