Radeon R7 250X vs Radeon RX 580

Intro

Compare all that to the Radeon RX 580, which uses a 14 nm design. AMD has clocked the core speed at 1257 MHz. The GDDR5 memory is set to run at a speed of 2000 MHz on this card. It features 2304 SPUs along with 144 Texture Address Units 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 RX 580		13630 points
Radeon R7 250X		2860 points
	Difference: 10770 (377%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250X		95 Watts
Radeon RX 580		185 Watts
	Difference: 90 Watts (95%)

Memory Bandwidth

In theory, the Radeon RX 580 should be 264% quicker than the Radeon R7 250X overall, because of its greater data rate. (explain)

Radeon RX 580		262144 MB/sec
Radeon R7 250X		72000 MB/sec
	Difference: 190144 (264%)

Texel Rate

The Radeon RX 580 is a lot (approximately 353%) better at AF than the Radeon R7 250X. (explain)

Radeon RX 580		181008 Mtexels/sec
Radeon R7 250X		40000 Mtexels/sec
	Difference: 141008 (353%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon RX 580 is the winner, by a large margin. (explain)

Radeon RX 580		40224 Mpixels/sec
Radeon R7 250X		16000 Mpixels/sec
	Difference: 24224 (151%)

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 MB per second) that can be transported across the external memory interface in a second. It's calculated by multiplying the bus width by its memory clock speed. In the case of DDR RAM, the result should 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 AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total texture units by the core clock speed of the chip. The better the texel rate, 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 the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.