Radeon HD 7870 XT vs Radeon R7 250

Intro

Compare those specifications to the Radeon R7 250, which features clock speeds of 1000 MHz on the GPU, and 1150 MHz on the 1024 MB of GDDR5 RAM. It features 384 SPUs along with 24 TAUs and 8 ROPs.

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 7870 XT		6390 points
Radeon R7 250		1836 points
	Difference: 4554 (248%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250		65 Watts
Radeon HD 7870 XT		185 Watts
	Difference: 120 Watts (185%)

Memory Bandwidth

Performance-wise, the Radeon HD 7870 XT should in theory be quite a bit better than the Radeon R7 250 overall. (explain)

Radeon HD 7870 XT		192000 MB/sec
Radeon R7 250		73600 MB/sec
	Difference: 118400 (161%)

Texel Rate

The Radeon HD 7870 XT should be much (approximately 270%) faster with regards to AF than the Radeon R7 250. (explain)

Radeon HD 7870 XT		88800 Mtexels/sec
Radeon R7 250		24000 Mtexels/sec
	Difference: 64800 (270%)

Pixel Rate

If using a high resolution is important to you, then the Radeon HD 7870 XT is superior to the Radeon R7 250, by far. (explain)

Radeon HD 7870 XT		29600 Mpixels/sec
Radeon R7 250		8000 Mpixels/sec
	Difference: 21600 (270%)

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 data (counted in megabytes per second) that can be transferred over the external memory interface within a second. It is calculated by multiplying the card's interface width by the speed of its memory. If the card has DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.