GeForce GTX 970M vs Radeon HD 7850

Intro

Compare all that to the Radeon HD 7850, which features GPU core speed of 860 MHz, and 2048 MB of GDDR5 RAM set to run at 1200 MHz through a 256-bit bus. It also is comprised of 1024 SPUs, 64 Texture Address Units, and 32 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

GeForce GTX 970M		7520 points
Radeon HD 7850		5200 points
	Difference: 2320 (45%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 970M		75 Watts
Radeon HD 7850		130 Watts
	Difference: 55 Watts (73%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 7850 is 60% faster than the GeForce GTX 970M in general, because of its higher data rate. (explain)

Radeon HD 7850		153600 MB/sec
GeForce GTX 970M		96000 MB/sec
	Difference: 57600 (60%)

Texel Rate

The GeForce GTX 970M is much (approximately 34%) better at AF than the Radeon HD 7850. (explain)

GeForce GTX 970M		73920 Mtexels/sec
Radeon HD 7850		55040 Mtexels/sec
	Difference: 18880 (34%)

Pixel Rate

The GeForce GTX 970M is quite a bit (more or less 61%) better at AA than the Radeon HD 7850, and also able to handle higher resolutions without slowing down too much. (explain)

GeForce GTX 970M		44352 Mpixels/sec
Radeon HD 7850		27520 Mpixels/sec
	Difference: 16832 (61%)

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 maximum amount of information (counted in MB per second) that can be transported across the external memory interface in a second. It is worked out by multiplying the bus width by the speed of its memory. In the case of DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends 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 maximum fill rate.