Radeon HD 7850 vs Radeon R9 270

Intro

Compare those specifications to the Radeon R9 270, which comes with GPU core speed of 900 MHz, and 2048 MB of GDDR5 RAM running at 1400 MHz through a 256-bit bus. It also is comprised of 1280 Stream Processors, 80 TAUs, and 32 ROPs.

Display Graphs

Hide Graphs

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

Theoretically, the Radeon R9 270 should perform a small bit faster than the Radeon HD 7850 overall. (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 (about 31%) more effective at anisotropic filtering than the Radeon HD 7850. (explain)

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

Pixel Rate

If running with high levels of AA is important to you, then the Radeon R9 270 is the winner, but it probably won't make a huge difference. (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 max amount of data (in units of MB per second) that can be moved over the external memory interface in one second. It is worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR memory, the result 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 anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total number of texture units by the core clock 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 applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.