Compare any two graphics cards:
GeForce GTX 260 216SP 55 nm vs Radeon HD 4870 1GB
Intro
The GeForce GTX 260 216SP 55 nm has a clock speed of 576 MHz and a GDDR3 memory speed of 999 MHz. It also makes use of a 448-bit memory bus, and makes use of a 55 nm design. It is comprised of 216 SPUs, 72 TAUs, and 28 Raster Operation Units.
Compare those specifications to the Radeon HD 4870 1GB, which makes use of a 55 nm design. ATi has set the core frequency at 750 MHz. The GDDR5 RAM works at a frequency of 900 MHz on this particular card. It features 800(160x5) SPUs along with 40 TAUs and 16 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 4870 1GB |
|
150 Watts |
| GeForce GTX 260 216SP 55 nm |
|
171 Watts |
| |
Difference: 21 Watts (14%)
|
|
Memory Bandwidth
The Radeon HD 4870 1GB should theoretically be a bit faster than the GeForce GTX 260 216SP 55 nm in general. (explain)
| Radeon HD 4870 1GB |
|
115200 MB/sec |
| GeForce GTX 260 216SP 55 nm |
|
111888 MB/sec |
| |
Difference: 3312 (3%)
|
|
Texel Rate
The GeForce GTX 260 216SP 55 nm is a lot (about 38%) faster with regards to anisotropic filtering than the Radeon HD 4870 1GB. (
explain)
| GeForce GTX 260 216SP 55 nm |
|
41472 Mtexels/sec |
| Radeon HD 4870 1GB |
|
30000 Mtexels/sec |
| |
Difference: 11472 (38%)
|
|
Pixel Rate
The GeForce GTX 260 216SP 55 nm should be quite a bit (more or less 34%) faster with regards to anti-aliasing than the Radeon HD 4870 1GB, and also capable of handling higher resolutions without losing too much performance. (
explain)
| GeForce GTX 260 216SP 55 nm |
|
16128 Mpixels/sec |
| Radeon HD 4870 1GB |
|
12000 Mpixels/sec |
| |
Difference: 4128 (34%)
|
|
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 260 216SP 55 nm
Amazon.com
Other US-based stores
Amazon.co.uk
Amazon.de
Amazon.fr
|
Radeon HD 4870 1GB
Amazon.com
Other US-based stores
Amazon.co.uk
Amazon.de
Amazon.fr
|
Specifications
| Model
| GeForce GTX 260 216SP 55 nm |
Radeon HD 4870 1GB |
| Manufacturer
| nVidia |
ATi |
| Year
| December 22, 2008 |
Jun 25, 2008 |
| Code Name
| G200b |
RV770 XT |
| Fab Process
| 55 nm |
55 nm |
| Bus
| PCIe x16 2.0 |
PCIe 2.0 x16 |
| Memory
| 896 MB |
1024 MB |
| Core Speed
| 576 MHz |
750 MHz |
| Shader Speed
| 1242 MHz |
(N/A) MHz |
| Memory Speed
| 999 MHz |
900 MHz |
| Unified Shaders
| 216 |
800(160x5) |
| Texture Mapping Units
| 72 |
40 |
| Render Output Units
| 28 |
16 |
| Bus Type
| GDDR3 |
GDDR5 |
| Bus Width
| 448-bit |
256-bit |
| DirectX Version
| DirectX 10 |
DirectX 10.1 |
| OpenGL Version
| OpenGL 3.1 |
OpenGL 3.0 |
| Power (Max TDP)
| 171 watts |
150 watts |
| Shader Model
| 4.0 |
4.1 |
| Bandwidth
| 111888 MB/sec |
115200 MB/sec |
| Texel Rate
| 41472 Mtexels/sec |
30000 Mtexels/sec |
| Pixel Rate
| 16128 Mpixels/sec |
12000 Mpixels/sec |
Memory Bandwidth: Memory bandwidth is the largest amount of information (counted in MB per second) that can be transported over the external memory interface within a second. It's calculated by multiplying the interface width by its memory speed. In the case of DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x.
The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.
Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.
Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen.
The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.
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