GeForce GTX 850M vs Radeon R9 285

Intro

Compare those specs to the Radeon R9 285, which makes use of a 28 nm design. AMD has set the core frequency at 918 MHz. The GDDR5 RAM runs at a frequency of 1375 MHz on this model. It features 1792 SPUs as well as 112 TAUs and 32 Rasterization Operator 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

Radeon R9 285		8500 points
GeForce GTX 850M		3340 points
	Difference: 5160 (154%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 850M		40 Watts
Radeon R9 285		190 Watts
	Difference: 150 Watts (375%)

Memory Bandwidth

Performance-wise, the Radeon R9 285 should theoretically be a lot superior to the GeForce GTX 850M in general. (explain)

Radeon R9 285		176000 MB/sec
GeForce GTX 850M		32000 MB/sec
	Difference: 144000 (450%)

Texel Rate

The Radeon R9 285 is a lot (about 193%) faster with regards to anisotropic filtering than the GeForce GTX 850M. (explain)

Radeon R9 285		102816 Mtexels/sec
GeForce GTX 850M		35040 Mtexels/sec
	Difference: 67776 (193%)

Pixel Rate

The Radeon R9 285 should be a lot (approximately 110%) more effective at full screen anti-aliasing than the GeForce GTX 850M, and should be capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon R9 285		29376 Mpixels/sec
GeForce GTX 850M		14016 Mpixels/sec
	Difference: 15360 (110%)

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 (in units of megabytes per second) that can be transported across the external memory interface in a second. The number is worked out by multiplying the bus width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.