Geforce GTX 780 vs Radeon R7 250X

Intro

Compare all that to the Radeon R7 250X, which features a GPU core clock speed of 1000 MHz, and 1024 MB of GDDR5 memory running at 1125 MHz through a 128-bit bus. It also is comprised of 640 SPUs, 40 Texture Address Units, and 16 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

Geforce GTX 780		10082 points
Radeon R7 250X		2860 points
	Difference: 7222 (253%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250X		95 Watts
Geforce GTX 780		250 Watts
	Difference: 155 Watts (163%)

Memory Bandwidth

Theoretically speaking, the Geforce GTX 780 should be 301% faster than the Radeon R7 250X overall, due to its higher data rate. (explain)

Geforce GTX 780		288384 MB/sec
Radeon R7 250X		72000 MB/sec
	Difference: 216384 (301%)

Texel Rate

The Geforce GTX 780 should be quite a bit (more or less 314%) more effective at texture filtering than the Radeon R7 250X. (explain)

Geforce GTX 780		165696 Mtexels/sec
Radeon R7 250X		40000 Mtexels/sec
	Difference: 125696 (314%)

Pixel Rate

The Geforce GTX 780 will be much (about 159%) more effective at AA than the Radeon R7 250X, and should be able to handle higher resolutions while still performing well. (explain)

Geforce GTX 780		41424 Mpixels/sec
Radeon R7 250X		16000 Mpixels/sec
	Difference: 25424 (159%)

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: Memory bandwidth is the max amount of information (measured in MB 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 clock speed. In the case of DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends 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 max fill rate.