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GeForce GTX 860M vs Radeon HD 7770

Intro

The GeForce GTX 860M features core clock speeds of 797 MHz on the GPU, and 1000 MHz on the 4096 MB of GDDR5 memory. It features 1152 SPUs as well as 96 TAUs and 16 ROPs.

Compare those specs to the Radeon HD 7770, which has a core clock frequency of 1000 MHz and a GDDR5 memory frequency of 1125 MHz. It also makes use of a 128-bit memory bus, and makes use of a 28 nm design. It features 640 SPUs, 40 TAUs, and 16 Raster Operation Units.

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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 860M 4340 points
Radeon HD 7770 3180 points
Difference: 1160 (36%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 860M 45 Watts
Radeon HD 7770 80 Watts
Difference: 35 Watts (78%)

Memory Bandwidth

As far as performance goes, the Radeon HD 7770 should theoretically be a little bit superior to the GeForce GTX 860M in general. (explain)

Radeon HD 7770 72000 MB/sec
GeForce GTX 860M 64000 MB/sec
Difference: 8000 (13%)

Texel Rate

The GeForce GTX 860M should be quite a bit (more or less 91%) better at AF than the Radeon HD 7770. (explain)

GeForce GTX 860M 76512 Mtexels/sec
Radeon HD 7770 40000 Mtexels/sec
Difference: 36512 (91%)

Pixel Rate

The Radeon HD 7770 should be quite a bit (about 25%) more effective at anti-aliasing than the GeForce GTX 860M, and should be capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon HD 7770 16000 Mpixels/sec
GeForce GTX 860M 12752 Mpixels/sec
Difference: 3248 (25%)

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 860M

Amazon.com

Check prices at:

Radeon HD 7770

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 860M Radeon HD 7770
Manufacturer nVidia AMD
Year March 12 2014 February 2012
Code Name GM107 Cape Verde XT
Memory 4096 MB 1024 MB
Core Speed 797 MHz 1000 MHz
Memory Speed 4000 MHz 4500 MHz
Power (Max TDP) 45 watts 80 watts
Bandwidth 64000 MB/sec 72000 MB/sec
Texel Rate 76512 Mtexels/sec 40000 Mtexels/sec
Pixel Rate 12752 Mpixels/sec 16000 Mpixels/sec
Unified Shaders 1152 640
Texture Mapping Units 96 40
Render Output Units 16 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 28 nm 28 nm
Transistors (Unknown) million 1500 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 12 DirectX 11.1
OpenGL Version OpenGL 4.5 OpenGL 4.2

Memory Bandwidth: Memory bandwidth is the largest amount of information (measured in megabytes per second) that can be moved past the external memory interface within a second. It's calculated by multiplying the interface width by its memory clock speed. If the card has DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the clock 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 rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

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GeForce GTX 860M

Amazon.com

Check prices at:

Radeon HD 7770

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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