GeForce GTX 850M vs Geforce GTX 770

Intro

Compare all of that to the Geforce GTX 770, which has GPU clock speed of 1046 MHz, and 2048 MB of GDDR5 RAM set to run at 1753 MHz through a 256-bit bus. It also is made up of 1536 Stream Processors, 128 TAUs, and 32 Raster Operation Units.

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 770		7854 points
GeForce GTX 850M		3340 points
	Difference: 4514 (135%)

Zcash Mining Hash Rate

Geforce GTX 770		70 Sol/s
GeForce GTX 850M		49 Sol/s
	Difference: 21 (43%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 850M		40 Watts
Geforce GTX 770		230 Watts
	Difference: 190 Watts (475%)

Memory Bandwidth

Theoretically, the Geforce GTX 770 should be quite a bit faster than the GeForce GTX 850M in general. (explain)

Geforce GTX 770		224384 MB/sec
GeForce GTX 850M		32000 MB/sec
	Difference: 192384 (601%)

Texel Rate

The Geforce GTX 770 is quite a bit (approximately 282%) more effective at AF than the GeForce GTX 850M. (explain)

Geforce GTX 770		133888 Mtexels/sec
GeForce GTX 850M		35040 Mtexels/sec
	Difference: 98848 (282%)

Pixel Rate

The Geforce GTX 770 should be much (about 139%) faster with regards to anti-aliasing than the GeForce GTX 850M, and will be able to handle higher resolutions while still performing well. (explain)

Geforce GTX 770		33472 Mpixels/sec
GeForce GTX 850M		14016 Mpixels/sec
	Difference: 19456 (139%)

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 largest amount of information (counted in MB per second) that can be transported over the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR 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 AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to its local memory per second - measured in millions of pixels per second. The number 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 drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.