 |
 |
Radeon HD 4850 1GB vs Radeon HD 5770
Intro
The Radeon HD 4850 1GB has a clock speed of 625 MHz and a GDDR4 memory speed of 993 MHz. It also makes use of a 256-bit bus, and uses a 55 nm design. It is made up of 800(160x5) SPUs, 40 TAUs, and 16 ROPs.Compare those specs to the Radeon HD 5770, which makes use of a 40 nm design. AMD has clocked the core speed at 850 MHz. The GDDR5 RAM is set to run at a frequency of 1200 MHz on this particular card. It features 800(160x5) SPUs along with 40 Texture Address Units and 16 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 5770 |
|
108 Watts |
| Radeon HD 4850 1GB |
|
110 Watts |
|
|
Memory Bandwidth
As far as performance goes, the Radeon HD 5770 should in theory be much better than the Radeon HD 4850 1GB overall. (explain)
| Radeon HD 5770 |
|
76800 MB/sec |
| Radeon HD 4850 1GB |
|
63552 MB/sec |
|
|
Texel Rate
The Radeon HD 5770 is much (about 36%) more effective at AF than the Radeon HD 4850 1GB. (explain)| Radeon HD 5770 |
|
34000 Mtexels/sec |
| Radeon HD 4850 1GB |
|
25000 Mtexels/sec |
|
|
Pixel Rate
If running with a high resolution is important to you, then the Radeon HD 5770 is a better choice, and very much so. (explain)| Radeon HD 5770 |
|
13600 Mpixels/sec |
| Radeon HD 4850 1GB |
|
10000 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 4850 1GBAmazon.com
Check prices at:
|
Radeon HD 5770Amazon.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 4850 1GB | Radeon HD 5770 |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | Jun 25, 2008 | October 13, 2009 |
| Code Name | RV770 PRO | Juniper XT |
| Memory | 1024 MB | 1024 MB |
| Core Speed | 625 MHz | 850 MHz |
| Memory Speed | 1986 MHz | 4800 MHz |
| Power (Max TDP) | 110 watts | 108 watts |
| Bandwidth | 63552 MB/sec | 76800 MB/sec |
| Texel Rate | 25000 Mtexels/sec | 34000 Mtexels/sec |
| Pixel Rate | 10000 Mpixels/sec | 13600 Mpixels/sec |
| Unified Shaders | 800(160x5) | 800(160x5) |
| Texture Mapping Units | 40 | 40 |
| Render Output Units | 16 | 16 |
| Bus Type | GDDR4 | GDDR5 |
| Bus Width | 256-bit | 128-bit |
| Fab Process | 55 nm | 40 nm |
| Transistors | 956 million | 1040 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: Memory bandwidth is the max amount of data (in units of megabytes per second) that can be moved past the external memory interface within a second. It is worked out by multiplying the interface width by the speed of its memory. If the card has DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.
Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This number is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.
Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.
Radeon HD 4850 1GBAmazon.com
Check prices at:
|
Radeon HD 5770Amazon.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
One Response to “Radeon HD 4850 1GB vs Radeon HD 5770”[...] excelente para ver el rendimiento y consumo. Insisto, la 5770 es la mejor en consumo/rendimiento, Radeon HD 4850 1GB vs Radeon HD 5770 – Performance Comparison Benchmarks @ Hardware Compare Cuantos watts reales gasta tu tarjeta? Report: the true power consumption of 73 graphics cards [...]