Radeon R7 250X vs Radeon R9 390X 8G

Intro

Compare those specs to the Radeon R9 390X 8G, which makes use of a 28 nm design. AMD has clocked the core speed at 1050 MHz. The GDDR5 memory is set to run at a speed of 1500 MHz on this particular model. It features 2816 SPUs as well as 176 TAUs and 64 Rasterization Operator 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 390X 8G		13555 points
Radeon R7 250X		2860 points
	Difference: 10695 (374%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250X		95 Watts
Radeon R9 390X 8G		275 Watts
	Difference: 180 Watts (189%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 390X 8G will be 433% faster than the Radeon R7 250X in general, due to its greater bandwidth. (explain)

Radeon R9 390X 8G		384000 MB/sec
Radeon R7 250X		72000 MB/sec
	Difference: 312000 (433%)

Texel Rate

The Radeon R9 390X 8G should be quite a bit (approximately 362%) better at anisotropic filtering than the Radeon R7 250X. (explain)

Radeon R9 390X 8G		184800 Mtexels/sec
Radeon R7 250X		40000 Mtexels/sec
	Difference: 144800 (362%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R9 390X 8G is a better choice, by far. (explain)

Radeon R9 390X 8G		67200 Mpixels/sec
Radeon R7 250X		16000 Mpixels/sec
	Difference: 51200 (320%)

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 (measured in MB per second) that can be transferred over the external memory interface in one second. The number is worked out by multiplying the bus width by its memory speed. In the case of DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units 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 also depends on many 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.