Radeon HD 7870 vs Radeon R7 250

Intro

Compare those specifications to the Radeon R7 250, which uses a 28 nm design. AMD has set the core frequency at 1000 MHz. The GDDR5 memory runs at a frequency of 1150 MHz on this specific model. It features 384 SPUs along with 24 Texture Address Units 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		6230 points
Radeon R7 250		1836 points
	Difference: 4394 (239%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250		65 Watts
Radeon HD 7870		175 Watts
	Difference: 110 Watts (169%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 7870 should perform a lot faster than the Radeon R7 250 overall. (explain)

Radeon HD 7870		153600 MB/sec
Radeon R7 250		73600 MB/sec
	Difference: 80000 (109%)

Texel Rate

The Radeon HD 7870 will be quite a bit (more or less 233%) faster with regards to anisotropic filtering than the Radeon R7 250. (explain)

Radeon HD 7870		80000 Mtexels/sec
Radeon R7 250		24000 Mtexels/sec
	Difference: 56000 (233%)

Pixel Rate

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

Radeon HD 7870		32000 Mpixels/sec
Radeon R7 250		8000 Mpixels/sec
	Difference: 24000 (300%)

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 max amount of information (measured in megabytes per second) that can be moved over the external memory interface in a second. It is calculated by multiplying the interface width by the speed of its memory. In the case of DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the 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 number of texture map elements (texels) that can be processed per second. This figure is calculated 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the the card's 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 rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.