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GeForce GTX 965M vs Radeon HD 7770

Intro

The GeForce GTX 965M comes with a GPU core clock speed of 944 MHz, and the 2048 MB of GDDR5 memory runs at 1000 MHz through a 128-bit bus. It also is made up of 1024 SPUs, 64 Texture Address Units, and 32 ROPs.

Compare that to the Radeon HD 7770, which has GPU clock speed of 1000 MHz, and 1024 MB of GDDR5 RAM running at 1125 MHz through a 128-bit bus. It also is comprised of 640 Stream Processors, 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 965M 5650 points
Radeon HD 7770 3180 points
Difference: 2470 (78%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 965M 60 Watts
Radeon HD 7770 80 Watts
Difference: 20 Watts (33%)

Memory Bandwidth

Performance-wise, the Radeon HD 7770 should in theory be just a bit better than the GeForce GTX 965M in general. (explain)

Radeon HD 7770 72000 MB/sec
GeForce GTX 965M 64000 MB/sec
Difference: 8000 (13%)

Texel Rate

The GeForce GTX 965M will be quite a bit (approximately 51%) faster with regards to anisotropic filtering than the Radeon HD 7770. (explain)

GeForce GTX 965M 60416 Mtexels/sec
Radeon HD 7770 40000 Mtexels/sec
Difference: 20416 (51%)

Pixel Rate

The GeForce GTX 965M should be quite a bit (more or less 89%) more effective at full screen anti-aliasing than the Radeon HD 7770, and capable of handling higher resolutions better. (explain)

GeForce GTX 965M 30208 Mpixels/sec
Radeon HD 7770 16000 Mpixels/sec
Difference: 14208 (89%)

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 965M

Amazon.com

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Radeon HD 7770

Amazon.com

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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 965M Radeon HD 7770
Manufacturer nVidia AMD
Year January 5 2015 February 2012
Code Name GM204 Cape Verde XT
Memory 2048 MB 1024 MB
Core Speed 944 MHz 1000 MHz
Memory Speed 4000 MHz 4500 MHz
Power (Max TDP) 60 watts 80 watts
Bandwidth 64000 MB/sec 72000 MB/sec
Texel Rate 60416 Mtexels/sec 40000 Mtexels/sec
Pixel Rate 30208 Mpixels/sec 16000 Mpixels/sec
Unified Shaders 1024 640
Texture Mapping Units 64 40
Render Output Units 32 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 maximum amount of data (counted in MB per second) that can be transferred past the external memory interface in one second. It is worked out by multiplying the bus width by its memory speed. In the case of DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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GeForce GTX 965M

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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