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GeForce GTX 650 Ti vs Radeon HD 7770

Intro

The GeForce GTX 650 Ti comes with a GPU core clock speed of 928 MHz, and the 1024 MB of GDDR5 memory is set to run at 1350 MHz through a 128-bit bus. It also is comprised of 768 Stream Processors, 64 Texture Address Units, and 16 ROPs.

Compare all of that to the Radeon HD 7770, which features core clock speeds of 1000 MHz on the GPU, and 1125 MHz on the 1024 MB of GDDR5 memory. It features 640 SPUs as well as 40 Texture Address Units and 16 ROPs.

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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 650 Ti 3434 points
Radeon HD 7770 3180 points
Difference: 254 (8%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

Theoretically, the GeForce GTX 650 Ti should perform a little bit faster than the Radeon HD 7770 overall. (explain)

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

Texel Rate

The GeForce GTX 650 Ti is quite a bit (approximately 48%) more effective at anisotropic filtering than the Radeon HD 7770. (explain)

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

Pixel Rate

If using a high resolution is important to you, then the Radeon HD 7770 is the winner, though not by far. (explain)

Radeon HD 7770 16000 Mpixels/sec
GeForce GTX 650 Ti 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

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 Radeon HD 7770
Manufacturer nVidia AMD
Year October 2012 February 2012
Code Name GK106 Cape Verde XT
Memory 1024 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: Bandwidth is the maximum amount of data (in units of MB per second) that can be transferred over the external memory interface in one second. It's calculated by multiplying the interface width by its memory speed. In the case of DDR type memory, 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 AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes 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, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

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GeForce GTX 650 Ti

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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