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GeForce GTX 650 Ti 2GB vs Radeon HD 7770

Intro

The GeForce GTX 650 Ti 2GB comes with clock speeds of 928 MHz on the GPU, and 1350 MHz on the 2048 MB of GDDR5 RAM. It features 768 SPUs as well as 64 TAUs and 16 Rasterization Operator Units.

Compare all of that to the Radeon HD 7770, which comes with a GPU core clock speed of 1000 MHz, and 1024 MB of GDDR5 memory running at 1125 MHz through a 128-bit bus. It also is made up of 640 SPUs, 40 TAUs, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7770 80 Watts
GeForce GTX 650 Ti 2GB 110 Watts
Difference: 30 Watts (38%)

Memory Bandwidth

The GeForce GTX 650 Ti 2GB, in theory, should be a little bit faster than the Radeon HD 7770 overall. (explain)

GeForce GTX 650 Ti 2GB 86400 MB/sec
Radeon HD 7770 72000 MB/sec
Difference: 14400 (20%)

Texel Rate

The GeForce GTX 650 Ti 2GB should be quite a bit (more or less 48%) faster with regards to texture filtering than the Radeon HD 7770. (explain)

GeForce GTX 650 Ti 2GB 59392 Mtexels/sec
Radeon HD 7770 40000 Mtexels/sec
Difference: 19392 (48%)

Pixel Rate

The Radeon HD 7770 should be a little bit (approximately 8%) faster with regards to anti-aliasing than the GeForce GTX 650 Ti 2GB, and will be capable of handling higher resolutions without losing too much performance. (explain)

Radeon HD 7770 16000 Mpixels/sec
GeForce GTX 650 Ti 2GB 14848 Mpixels/sec
Difference: 1152 (8%)

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 650 Ti 2GB

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 650 Ti 2GB Radeon HD 7770
Manufacturer nVidia AMD
Year October 2012 February 2012
Code Name GK106 Cape Verde XT
Memory 2048 MB 1024 MB
Core Speed 928 MHz 1000 MHz
Memory Speed 5400 MHz 4500 MHz
Power (Max TDP) 110 watts 80 watts
Bandwidth 86400 MB/sec 72000 MB/sec
Texel Rate 59392 Mtexels/sec 40000 Mtexels/sec
Pixel Rate 14848 Mpixels/sec 16000 Mpixels/sec
Unified Shaders 768 640
Texture Mapping Units 64 40
Render Output Units 16 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 28 nm 28 nm
Transistors 2540 million 1500 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.0 DirectX 11.1
OpenGL Version OpenGL 4.3 OpenGL 4.2

Memory Bandwidth: Memory bandwidth is the maximum amount of data (measured in megabytes 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 its memory clock speed. If the card has DDR memory, the result should be multiplied by 2 again. If 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, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This number is calculated 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 in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

Hide Prices

GeForce GTX 650 Ti 2GB

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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