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GeForce GTX 650 Ti 2GB vs Radeon HD 7770
Intro
The GeForce GTX 650 Ti 2GB has a core clock speed of 928 MHz and a GDDR5 memory frequency of 1350 MHz. It also makes use of a 128-bit memory bus, and uses a 28 nm design. It features 768 SPUs, 64 TAUs, and 16 ROPs.Compare all of that to the Radeon HD 7770, which features a clock speed of 1000 MHz and a GDDR5 memory frequency of 1125 MHz. It also features a 128-bit memory bus, and uses a 28 nm design. It features 640 SPUs, 40 TAUs, and 16 Raster Operation Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 7770 |
|
80 Watts |
| GeForce GTX 650 Ti 2GB |
|
110 Watts |
|
|
Memory Bandwidth
Performance-wise, the GeForce GTX 650 Ti 2GB should theoretically be just a bit superior to the Radeon HD 7770 overall. (explain)
| GeForce GTX 650 Ti 2GB |
|
86400 MB/sec |
| Radeon HD 7770 |
|
72000 MB/sec |
|
|
Texel Rate
The GeForce GTX 650 Ti 2GB should be quite a bit (more or less 48%) more effective at texture filtering than the Radeon HD 7770. (explain)| GeForce GTX 650 Ti 2GB |
|
59392 Mtexels/sec |
| Radeon HD 7770 |
|
40000 Mtexels/sec |
|
|
Pixel Rate
The Radeon HD 7770 will be a little bit (more or less 8%) faster with regards to AA than the GeForce GTX 650 Ti 2GB, and capable of handling higher screen resolutions while still performing well. (explain)| Radeon HD 7770 |
|
16000 Mpixels/sec |
| GeForce GTX 650 Ti 2GB |
|
14848 Mpixels/sec |
|
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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
GeForce GTX 650 Ti 2GB
Radeon HD 7770
Specifications
| 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: Bandwidth is the largest amount of data (counted in megabytes per second) that can be moved past the external memory interface in a second. It's calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.
Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.
Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs 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 output rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.
GeForce GTX 650 Ti 2GB
Radeon HD 7770
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