Radeon HD 4870 2GB vs Radeon R7 M260

Intro

Compare those specifications to the Radeon R7 M260, which has a core clock frequency of 715 MHz and a DDR3 memory speed of 1000 MHz. It also uses a 64-bit bus, and uses a 28 nm design. It is comprised of 384 SPUs, 24 Texture Address Units, and 8 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the Radeon HD 4870 2GB should theoretically be a lot superior to the Radeon R7 M260 in general. (explain)

Radeon HD 4870 2GB		115200 MB/sec
Radeon R7 M260		16000 MB/sec
	Difference: 99200 (620%)

Texel Rate

The Radeon HD 4870 2GB should be quite a bit (about 75%) faster with regards to AF than the Radeon R7 M260. (explain)

Radeon HD 4870 2GB		30000 Mtexels/sec
Radeon R7 M260		17160 Mtexels/sec
	Difference: 12840 (75%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 4870 2GB is the winner, and very much so. (explain)

Radeon HD 4870 2GB		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 maximum amount of information (in units of megabytes per second) that can be transferred across the external memory interface in one second. The number is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This 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 texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units 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 rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.