GeForce GTX 880M vs Radeon R7 250X

Intro

Compare that to the Radeon R7 250X, which features a core clock frequency of 1000 MHz and a GDDR5 memory frequency of 1125 MHz. It also uses a 128-bit memory bus, and makes use of a 28 nm design. It is comprised of 640 SPUs, 40 Texture Address Units, and 16 ROPs.

Display Graphs

Hide Graphs

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 880M		6360 points
Radeon R7 250X		2860 points
	Difference: 3500 (122%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250X		95 Watts
GeForce GTX 880M		130 Watts
	Difference: 35 Watts (37%)

Memory Bandwidth

In theory, the GeForce GTX 880M will be 78% faster than the Radeon R7 250X in general, because of its greater bandwidth. (explain)

GeForce GTX 880M		128000 MB/sec
Radeon R7 250X		72000 MB/sec
	Difference: 56000 (78%)

Texel Rate

The GeForce GTX 880M should be quite a bit (about 205%) faster with regards to texture filtering than the Radeon R7 250X. (explain)

GeForce GTX 880M		122112 Mtexels/sec
Radeon R7 250X		40000 Mtexels/sec
	Difference: 82112 (205%)

Pixel Rate

The GeForce GTX 880M will be a lot (approximately 91%) more effective at anti-aliasing than the Radeon R7 250X, and should be capable of handling higher screen resolutions while still performing well. (explain)

GeForce GTX 880M		30528 Mpixels/sec
Radeon R7 250X		16000 Mpixels/sec
	Difference: 14528 (91%)

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 largest amount of information (in units of megabytes per second) that can be transferred across the external memory interface in one second. The number is worked out by multiplying the interface width by its memory speed. If the card has DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of 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 amount of Raster Operations Pipelines by the clock speed of the card. 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 - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.