 |
 |
Radeon HD 4870 512MB vs Radeon HD 5830
Intro
The Radeon HD 4870 512MB features a GPU clock speed of 750 MHz, and the 512 MB of GDDR5 RAM runs at 900 MHz through a 256-bit bus. It also is made up of 800(160x5) Stream Processors, 40 TAUs, and 16 Raster Operation Units.Compare all that to the Radeon HD 5830, which makes use of a 40 nm design. AMD has set the core frequency at 800 MHz. The GDDR5 RAM works at a speed of 1000 MHz on this particular card. It features 1120(224x5) SPUs as well as 56 Texture Address Units and 16 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 4870 512MB |
|
150 Watts |
| Radeon HD 5830 |
|
175 Watts |
|
|
Memory Bandwidth
Theoretically, the Radeon HD 5830 should perform a little bit faster than the Radeon HD 4870 512MB in general. (explain)
| Radeon HD 5830 |
|
128000 MB/sec |
| Radeon HD 4870 512MB |
|
115200 MB/sec |
|
|
Texel Rate
The Radeon HD 5830 is quite a bit (approximately 49%) faster with regards to AF than the Radeon HD 4870 512MB. (explain)| Radeon HD 5830 |
|
44800 Mtexels/sec |
| Radeon HD 4870 512MB |
|
30000 Mtexels/sec |
|
|
Pixel Rate
If running with a high screen resolution is important to you, then the Radeon HD 5830 is the winner, though only just barely. (explain)| Radeon HD 5830 |
|
12800 Mpixels/sec |
| Radeon HD 4870 512MB |
|
12000 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
Radeon HD 4870 512MBAmazon.com
Check prices at:
|
Radeon HD 5830Amazon.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
| Model | Radeon HD 4870 512MB | Radeon HD 5830 |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | Jun 25, 2008 | February 25, 2010 |
| Code Name | RV770 XT | Cypress LE |
| Memory | 512 MB | 1024 MB |
| Core Speed | 750 MHz | 800 MHz |
| Memory Speed | 3600 MHz | 4000 MHz |
| Power (Max TDP) | 150 watts | 175 watts |
| Bandwidth | 115200 MB/sec | 128000 MB/sec |
| Texel Rate | 30000 Mtexels/sec | 44800 Mtexels/sec |
| Pixel Rate | 12000 Mpixels/sec | 12800 Mpixels/sec |
| Unified Shaders | 800(160x5) | 1120(224x5) |
| Texture Mapping Units | 40 | 56 |
| Render Output Units | 16 | 16 |
| Bus Type | GDDR5 | GDDR5 |
| Bus Width | 256-bit | 256-bit |
| Fab Process | 55 nm | 40 nm |
| Transistors | 956 million | 2154 million |
| Bus | PCIe 2.0 x16 | PCIe 2.1 x16 |
| DirectX Version | DirectX 10.1 | DirectX 11 |
| OpenGL Version | OpenGL 3.0 | OpenGL 3.2 |
Memory Bandwidth: Bandwidth is the maximum amount of data (counted in MB per second) that can be transported over the external memory interface within a second. The number is worked out by multiplying the bus width by the speed of its memory. If it uses DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.
Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.
Pixel Rate: Pixel rate is the most pixels the video card could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.
Radeon HD 4870 512MBAmazon.com
Check prices at:
|
Radeon HD 5830Amazon.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.
|
Comments
2 Responses to “Radeon HD 4870 512MB vs Radeon HD 5830”geforce 315
[...] Radeon HD 4870 512MB vs Radeon HD 5830 – Performance …Jun 8, 2011 … Compare all that to the Radeon HD 5830, which features GPU clock speed of 800 MHz, and 1024 MB of GDDR5 RAM set to run at 1000 MHz … [...]