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Radeon R7 250 vs Radeon R9 390X 8G

Intro

The Radeon R7 250 has a clock frequency of 1000 MHz and a GDDR5 memory frequency of 1150 MHz. It also makes use of a 128-bit bus, and uses a 28 nm design. It is made up of 384 SPUs, 24 Texture Address Units, and 8 Raster Operation Units.

Compare those specs to the Radeon R9 390X 8G, which has core clock speeds of 1050 MHz on the GPU, and 1500 MHz on the 8192 MB of GDDR5 memory. It features 2816 SPUs along with 176 TAUs and 64 ROPs.

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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 250 1836 points
Difference: 11719 (638%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

The Radeon R9 390X 8G, in theory, should perform much faster than the Radeon R7 250 in general. (explain)

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

Texel Rate

The Radeon R9 390X 8G will be a lot (about 670%) more effective at texture filtering than the Radeon R7 250. (explain)

Radeon R9 390X 8G 184800 Mtexels/sec
Radeon R7 250 24000 Mtexels/sec
Difference: 160800 (670%)

Pixel Rate

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

Radeon R9 390X 8G 67200 Mpixels/sec
Radeon R7 250 8000 Mpixels/sec
Difference: 59200 (740%)

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

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Radeon R7 250

Amazon.com

Check prices at:

Radeon R9 390X 8G

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model Radeon R7 250 Radeon R9 390X 8G
Manufacturer AMD AMD
Year October 2013 June 2015
Code Name Oland XT Grenada XT
Memory 1024 MB 8192 MB
Core Speed 1000 MHz 1050 MHz
Memory Speed 4600 MHz 6000 MHz
Power (Max TDP) 65 watts 275 watts
Bandwidth 73600 MB/sec 384000 MB/sec
Texel Rate 24000 Mtexels/sec 184800 Mtexels/sec
Pixel Rate 8000 Mpixels/sec 67200 Mpixels/sec
Unified Shaders 384 2816
Texture Mapping Units 24 176
Render Output Units 8 64
Bus Type GDDR5 GDDR5
Bus Width 128-bit 512-bit
Fab Process 28 nm 28 nm
Transistors 1040 million 6200 million
Bus PCIe 3.0 x16 PCIe 3.0 ×16
DirectX Version DirectX 11.2 DirectX 12.0
OpenGL Version OpenGL 4.3 OpenGL 4.5

Memory Bandwidth: Memory bandwidth is the largest amount of information (measured in megabytes per second) that can be transported across the external memory interface within a second. It is calculated by multiplying the bus width by its memory clock speed. If it uses DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This is calculated by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the 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 card could possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

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Radeon R7 250

Amazon.com

Check prices at:

Radeon R9 390X 8G

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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