GeForce GTX 660 vs Radeon R7 250

Intro

Compare those specifications to the Radeon R7 250, which has a GPU core clock speed of 1000 MHz, and 1024 MB of GDDR5 memory set to run at 1150 MHz through a 128-bit bus. It also is made up of 384 Stream Processors, 24 TAUs, 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

GeForce GTX 660		5063 points
Radeon R7 250		1836 points
	Difference: 3227 (176%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250		65 Watts
GeForce GTX 660		140 Watts
	Difference: 75 Watts (115%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 660 should theoretically be quite a bit better than the Radeon R7 250 in general. (explain)

GeForce GTX 660		144192 MB/sec
Radeon R7 250		73600 MB/sec
	Difference: 70592 (96%)

Texel Rate

The GeForce GTX 660 is quite a bit (approximately 227%) better at anisotropic filtering than the Radeon R7 250. (explain)

GeForce GTX 660		78400 Mtexels/sec
Radeon R7 250		24000 Mtexels/sec
	Difference: 54400 (227%)

Pixel Rate

The GeForce GTX 660 will be much (more or less 194%) faster with regards to AA than the Radeon R7 250, and will be capable of handling higher resolutions without losing too much performance. (explain)

GeForce GTX 660		23520 Mpixels/sec
Radeon R7 250		8000 Mpixels/sec
	Difference: 15520 (194%)

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 data (in units of MB per second) that can be transported across the external memory interface in a second. It's calculated by multiplying the bus width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card could 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 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 quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.