 |
 |
|
|
|
GeForce GTX 650 Ti 2GB vs Radeon HD 7770
Intro
The GeForce GTX 650 Ti 2GB comes with a clock frequency of 928 MHz and a GDDR5 memory speed of 1350 MHz. It also features a 128-bit memory bus, and makes use of a 28 nm design. It is made up of 768 SPUs, 64 TAUs, and 16 ROPs.Compare those specifications to the Radeon HD 7770, which comes with a clock frequency of 1000 MHz and a GDDR5 memory frequency of 1125 MHz. It also uses a 128-bit memory bus, and makes use of a 28 nm design. It is made up of 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 a little bit better than 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 will be quite a bit (about 48%) more effective at AF than the Radeon HD 7770. (explain)| GeForce GTX 650 Ti 2GB |
|
59392 Mtexels/sec |
| Radeon HD 7770 |
|
40000 Mtexels/sec |
|
|
Pixel Rate
If running with high levels of AA is important to you, then the Radeon HD 7770 is superior to the GeForce GTX 650 Ti 2GB, not by a very large margin though. (explain)| Radeon HD 7770 |
|
16000 Mpixels/sec |
| GeForce GTX 650 Ti 2GB |
|
14848 Mpixels/sec |
|
|
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
Please note that the price comparisons are based on search keywords, and might not be the exact same card listed on this page. We have no control over the accuracy of their search results.
GeForce GTX 650 Ti 2GBAmazon.com
Other US-based stores
|
Radeon HD 7770Amazon.com
Other US-based stores
|
Specifications
| Model | GeForce GTX 650 Ti 2GB | Radeon HD 7770 |
|---|---|---|
| Manufacturer | nVidia | ATi |
| Year | October 2012 | February 2012 |
| Code Name | GK106 | Cape Verde XT |
| Fab Process | 28 nm | 28 nm |
| Bus | PCIe 3.0 x16 | PCIe 3.0 x16 |
| Memory | 2048 MB | 1024 MB |
| Core Speed | 928 MHz | 1000 MHz |
| Shader Speed | 928 MHz | (N/A) MHz |
| Memory Speed | 1350 MHz (5400 MHz effective) | 1125 MHz (4500 MHz effective) |
| Unified Shaders | 768 | 640 |
| Texture Mapping Units | 64 | 40 |
| Render Output Units | 16 | 16 |
| Bus Type | GDDR5 | GDDR5 |
| Bus Width | 128-bit | 128-bit |
| DirectX Version | DirectX 11.1 | DirectX 11.1 |
| OpenGL Version | OpenGL 4.3 | OpenGL 4.2 |
| Power (Max TDP) | 110 watts | 80 watts |
| Shader Model | 5.0 | 5.0 |
| Bandwidth | 86400 MB/sec | 72000 MB/sec |
| Texel Rate | 59392 Mtexels/sec | 40000 Mtexels/sec |
| Pixel Rate | 14848 Mpixels/sec | 16000 Mpixels/sec |
Memory Bandwidth: Bandwidth is the maximum amount of data (in units of megabytes per second) that can be moved across the external memory interface in one second. It is calculated by multiplying the card's bus width by its memory speed. If the card has DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better 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 can be applied in one second. This number is worked out by multiplying the total amount of texture units by the core clock 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 in a second.
Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.
Comments
Be the first to leave a comment!