Radeon R7 250 vs Radeon R9 390 8G

Intro

Compare all that to the Radeon R9 390 8G, which has a clock speed of 1000 MHz and a GDDR5 memory frequency of 1500 MHz. It also uses a 512-bit bus, and uses a 28 nm design. It is comprised of 2560 SPUs, 160 TAUs, and 64 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 390 8G		12733 points
Radeon R7 250		1836 points
	Difference: 10897 (594%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250		65 Watts
Radeon R9 390 8G		275 Watts
	Difference: 210 Watts (323%)

Memory Bandwidth

Performance-wise, the Radeon R9 390 8G should in theory be quite a bit superior to the Radeon R7 250 in general. (explain)

Radeon R9 390 8G		384000 MB/sec
Radeon R7 250		73600 MB/sec
	Difference: 310400 (422%)

Texel Rate

The Radeon R9 390 8G should be a lot (more or less 567%) better at AF than the Radeon R7 250. (explain)

Radeon R9 390 8G		160000 Mtexels/sec
Radeon R7 250		24000 Mtexels/sec
	Difference: 136000 (567%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon R9 390 8G is superior to the Radeon R7 250, and very much so. (explain)

Radeon R9 390 8G		64000 Mpixels/sec
Radeon R7 250		8000 Mpixels/sec
	Difference: 56000 (700%)

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 information (counted in MB per second) that can be transferred over the external memory interface in one second. The number is worked out by multiplying the interface width by its memory clock speed. In the case of DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.