Radeon HD 7790 vs Radeon R7 250

Intro

Compare all that to the Radeon R7 250, which features GPU core speed of 1000 MHz, and 1024 MB of GDDR5 RAM running at 1150 MHz through a 128-bit bus. It also is comprised of 384 Stream Processors, 24 Texture Address Units, and 8 Raster Operation 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 HD 7790		4330 points
Radeon R7 250		1836 points
	Difference: 2494 (136%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250		65 Watts
Radeon HD 7790		85 Watts
	Difference: 20 Watts (31%)

Memory Bandwidth

Theoretically, the Radeon HD 7790 should perform quite a bit faster than the Radeon R7 250 in general. (explain)

Radeon HD 7790		96000 MB/sec
Radeon R7 250		73600 MB/sec
	Difference: 22400 (30%)

Texel Rate

The Radeon HD 7790 should be much (approximately 133%) more effective at anisotropic filtering than the Radeon R7 250. (explain)

Radeon HD 7790		56000 Mtexels/sec
Radeon R7 250		24000 Mtexels/sec
	Difference: 32000 (133%)

Pixel Rate

The Radeon HD 7790 should be much (about 100%) faster with regards to full screen anti-aliasing than the Radeon R7 250, and also should be capable of handling higher screen resolutions more effectively. (explain)

Radeon HD 7790		16000 Mpixels/sec
Radeon R7 250		8000 Mpixels/sec
	Difference: 8000 (100%)

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 (measured in megabytes per second) that can be moved over the external memory interface in one second. It's calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called 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 bandwidth is, the lower the potential to get to the maximum fill rate.