Radeon HD 7850 vs Radeon R9 270

Intro

Compare those specs to the Radeon R9 270, which has a GPU core clock speed of 900 MHz, and 2048 MB of GDDR5 RAM set to run at 1400 MHz through a 256-bit bus. It also features 1280 Stream Processors, 80 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon R9 270		5943 points
Radeon HD 7850		5200 points
	Difference: 743 (14%)

Ethereum Mining Hash Rate

Radeon R9 270		15 Mh/s
Radeon HD 7850		13 Mh/s
	Difference: 2 (15%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7850		130 Watts
Radeon R9 270		150 Watts
	Difference: 20 Watts (15%)

Memory Bandwidth

The Radeon R9 270 should theoretically perform just a bit faster than the Radeon HD 7850 in general. (explain)

Radeon R9 270		179200 MB/sec
Radeon HD 7850		153600 MB/sec
	Difference: 25600 (17%)

Texel Rate

The Radeon R9 270 is a lot (approximately 31%) faster with regards to texture filtering than the Radeon HD 7850. (explain)

Radeon R9 270		72000 Mtexels/sec
Radeon HD 7850		55040 Mtexels/sec
	Difference: 16960 (31%)

Pixel Rate

The Radeon R9 270 is just a bit (about 5%) more effective at AA than the Radeon HD 7850, and able to handle higher resolutions without slowing down too much. (explain)

Radeon R9 270		28800 Mpixels/sec
Radeon HD 7850		27520 Mpixels/sec
	Difference: 1280 (5%)

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 largest amount of information (measured in megabytes per second) that can be transferred past the external memory interface in a second. It is worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.