Radeon R7 250 vs Radeon R9 285

Intro

Compare all of that to the Radeon R9 285, which makes use of a 28 nm design. AMD has clocked the core speed at 918 MHz. The GDDR5 memory works at a speed of 1375 MHz on this card. It features 1792 SPUs along with 112 TAUs and 32 Rasterization Operator Units.

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 285		8500 points
Radeon R7 250		1836 points
	Difference: 6664 (363%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250		65 Watts
Radeon R9 285		190 Watts
	Difference: 125 Watts (192%)

Memory Bandwidth

The Radeon R9 285 should in theory be much faster than the Radeon R7 250 in general. (explain)

Radeon R9 285		176000 MB/sec
Radeon R7 250		73600 MB/sec
	Difference: 102400 (139%)

Texel Rate

The Radeon R9 285 should be much (about 328%) more effective at AF than the Radeon R7 250. (explain)

Radeon R9 285		102816 Mtexels/sec
Radeon R7 250		24000 Mtexels/sec
	Difference: 78816 (328%)

Pixel Rate

The Radeon R9 285 will be a lot (approximately 267%) better at FSAA than the Radeon R7 250, and also capable of handling higher resolutions better. (explain)

Radeon R9 285		29376 Mpixels/sec
Radeon R7 250		8000 Mpixels/sec
	Difference: 21376 (267%)

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 data (counted in MB per second) that can be transported over the external memory interface in one second. The number is calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs 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 output rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.