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GeForce GTX 870M vs Radeon HD 5770

Intro

The GeForce GTX 870M features core clock speeds of 941 MHz on the GPU, and 1000 MHz on the 3072 MB of GDDR5 RAM. It features 1344 SPUs as well as 112 Texture Address Units and 24 ROPs.

Compare all that to the Radeon HD 5770, which features GPU core speed of 850 MHz, and 1024 MB of GDDR5 RAM set to run at 1200 MHz through a 128-bit bus. It also is comprised of 800(160x5) Stream Processors, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5770 108 Watts
GeForce GTX 870M 110 Watts
Difference: 2 Watts (2%)

Memory Bandwidth

In theory, the GeForce GTX 870M is 25% quicker than the Radeon HD 5770 overall, due to its greater bandwidth. (explain)

GeForce GTX 870M 96000 MB/sec
Radeon HD 5770 76800 MB/sec
Difference: 19200 (25%)

Texel Rate

The GeForce GTX 870M will be much (more or less 210%) more effective at AF than the Radeon HD 5770. (explain)

GeForce GTX 870M 105392 Mtexels/sec
Radeon HD 5770 34000 Mtexels/sec
Difference: 71392 (210%)

Pixel Rate

The GeForce GTX 870M should be a lot (approximately 66%) faster with regards to FSAA than the Radeon HD 5770, and also capable of handling higher resolutions without slowing down too much. (explain)

GeForce GTX 870M 22584 Mpixels/sec
Radeon HD 5770 13600 Mpixels/sec
Difference: 8984 (66%)

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

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GeForce GTX 870M

Amazon.com

Check prices at:

Radeon HD 5770

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model GeForce GTX 870M Radeon HD 5770
Manufacturer nVidia AMD
Year March 12 2014 October 13, 2009
Code Name GK104 Juniper XT
Memory 3072 MB 1024 MB
Core Speed 941 MHz 850 MHz
Memory Speed 4000 MHz 4800 MHz
Power (Max TDP) 110 watts 108 watts
Bandwidth 96000 MB/sec 76800 MB/sec
Texel Rate 105392 Mtexels/sec 34000 Mtexels/sec
Pixel Rate 22584 Mpixels/sec 13600 Mpixels/sec
Unified Shaders 1344 800(160x5)
Texture Mapping Units 112 40
Render Output Units 24 16
Bus Type GDDR5 GDDR5
Bus Width 192-bit 128-bit
Fab Process 28 nm 40 nm
Transistors (Unknown) million 1040 million
Bus PCIe 3.0 x16 PCIe 2.1 x16
DirectX Version DirectX 12 DirectX 11
OpenGL Version OpenGL 4.5 OpenGL 3.2

Memory Bandwidth: Memory bandwidth is the max amount of data (in units of MB per second) that can be transported over the external memory interface in a second. The number is worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR memory, it must 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 AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total amount of texture units by the core clock 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 applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 870M

Amazon.com

Check prices at:

Radeon HD 5770

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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