Radeon HD 7850 vs Radeon R9 270

Intro

Compare those specs to the Radeon R9 270, which makes use of a 28 nm design. AMD has clocked the core speed at 900 MHz. The GDDR5 memory works at a frequency of 1400 MHz on this specific card. It features 1280 SPUs as well as 80 Texture Address Units and 32 ROPs.

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

In theory, the Radeon R9 270 should 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 should be quite a bit (approximately 31%) more effective at AF than the Radeon HD 7850. (explain)

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

Pixel Rate

If using a high screen resolution is important to you, then the Radeon R9 270 is a better choice, but only just. (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: Memory bandwidth is the largest amount of data (counted in MB per second) that can be transferred over the external memory interface in one second. The number is calculated by multiplying the interface width by the speed of its memory. If the card has DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster 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 per second. This number is calculated 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 graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.