GeForce GTX 980M vs Radeon HD 7850

Intro

Compare those specs to the Radeon HD 7850, which comes with a core clock speed of 860 MHz and a GDDR5 memory frequency of 1200 MHz. It also makes use of a 256-bit memory bus, and uses a 28 nm design. It features 1024 SPUs, 64 Texture Address Units, and 32 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 980M		9476 points
Radeon HD 7850		5200 points
	Difference: 4276 (82%)

Zcash Mining Hash Rate

Radeon HD 7850		171 Sol/s
GeForce GTX 980M		155 Sol/s
	Difference: 16 (10%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 980M		100 Watts
Radeon HD 7850		130 Watts
	Difference: 30 Watts (30%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 7850 should be 20% faster than the GeForce GTX 980M in general, due to its higher data rate. (explain)

Radeon HD 7850		153600 MB/sec
GeForce GTX 980M		128000 MB/sec
	Difference: 25600 (20%)

Texel Rate

The GeForce GTX 980M should be much (about 81%) faster with regards to anisotropic filtering than the Radeon HD 7850. (explain)

GeForce GTX 980M		99648 Mtexels/sec
Radeon HD 7850		55040 Mtexels/sec
	Difference: 44608 (81%)

Pixel Rate

The GeForce GTX 980M will be much (approximately 141%) better at AA than the Radeon HD 7850, and able to handle higher resolutions without losing too much performance. (explain)

GeForce GTX 980M		66432 Mpixels/sec
Radeon HD 7850		27520 Mpixels/sec
	Difference: 38912 (141%)

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 (counted in MB per second) that can be moved across the external memory interface in one second. It is calculated by multiplying the card's interface width by the speed of its memory. If the card has DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, the better the video 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 most pixels that the graphics chip could possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the card's 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 fill rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.