Radeon R7 250 vs Radeon R9 295X2

Intro

Compare that to the Radeon R9 295X2, which features a core clock speed of 1018 MHz and a GDDR5 memory frequency of 1250 MHz. It also uses a 512-bit bus, and makes use of a 28 nm design. It features 2816 SPUs, 176 Texture Address Units, and 64 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 R9 295X2		21205 points
Radeon R7 250		1836 points
	Difference: 19369 (1055%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250		65 Watts
Radeon R9 295X2		500 Watts
	Difference: 435 Watts (669%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 295X2 will be 770% quicker than the Radeon R7 250 overall, because of its higher data rate. (explain)

Radeon R9 295X2		640000 MB/sec
Radeon R7 250		73600 MB/sec
	Difference: 566400 (770%)

Texel Rate

The Radeon R9 295X2 will be much (about 1393%) better at anisotropic filtering than the Radeon R7 250. (explain)

Radeon R9 295X2		358336 Mtexels/sec
Radeon R7 250		24000 Mtexels/sec
	Difference: 334336 (1393%)

Pixel Rate

The Radeon R9 295X2 should be a lot (approximately 1529%) more effective at anti-aliasing than the Radeon R7 250, and able to handle higher screen resolutions while still performing well. (explain)

Radeon R9 295X2		130304 Mpixels/sec
Radeon R7 250		8000 Mpixels/sec
	Difference: 122304 (1529%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the max amount of information (in units of megabytes per second) that can be transported over the external memory interface within a second. It's worked out by multiplying the interface width by its memory speed. If it uses DDR RAM, the result should be multiplied by 2 once again. If 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 higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the graphics 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 amount of pixels that the graphics chip can possibly write to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.