 |
 |
Radeon HD 4670 1GB vs Radeon HD 6450 (OEM)
Intro
The Radeon HD 4670 1GB has a GPU core clock speed of 750 MHz, and the 1024 MB of GDDR4/GDDR3/DDR3/DDR2 RAM runs at 1100 MHz through a 128-bit bus. It also is comprised of 320(64x5) SPUs, 32 Texture Address Units, and 8 ROPs.Compare those specifications to the Radeon HD 6450 (OEM), which comes with core speeds of 625 MHz on the GPU, and 800 MHz on the 512 MB of GDDR3 memory. It features 160 SPUs along with 8 TAUs and 4 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 6450 (OEM) |
|
31 Watts |
| Radeon HD 4670 1GB |
|
70 Watts |
|
|
Memory Bandwidth
The Radeon HD 4670 1GB, in theory, should be quite a bit faster than the Radeon HD 6450 (OEM) overall. (explain)
| Radeon HD 4670 1GB |
|
35200 MB/sec |
| Radeon HD 6450 (OEM) |
|
12800 MB/sec |
|
|
Texel Rate
The Radeon HD 4670 1GB will be much (more or less 380%) more effective at anisotropic filtering than the Radeon HD 6450 (OEM). (explain)| Radeon HD 4670 1GB |
|
24000 Mtexels/sec |
| Radeon HD 6450 (OEM) |
|
5000 Mtexels/sec |
|
|
Pixel Rate
If using lots of anti-aliasing is important to you, then the Radeon HD 4670 1GB is the winner, and very much so. (explain)| Radeon HD 4670 1GB |
|
6000 Mpixels/sec |
| Radeon HD 6450 (OEM) |
|
2500 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 4670 1GBAmazon.com
Check prices at:
|
Radeon HD 6450 (OEM)Amazon.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 4670 1GB | Radeon HD 6450 (OEM) |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | Sep 10, 2008 | February 2011 |
| Code Name | RV730 XT | Caicos |
| Memory | 1024 MB | 512 MB |
| Core Speed | 750 MHz | 625 MHz |
| Memory Speed | 2200 MHz | 1600 MHz |
| Power (Max TDP) | 70 watts | 31 watts |
| Bandwidth | 35200 MB/sec | 12800 MB/sec |
| Texel Rate | 24000 Mtexels/sec | 5000 Mtexels/sec |
| Pixel Rate | 6000 Mpixels/sec | 2500 Mpixels/sec |
| Unified Shaders | 320(64x5) | 160 |
| Texture Mapping Units | 32 | 8 |
| Render Output Units | 8 | 4 |
| Bus Type | GDDR4/GDDR3/DDR3/DDR2 | GDDR3 |
| Bus Width | 128-bit | 64-bit |
| Fab Process | 55 nm | 40 nm |
| Transistors | 514 million | 370 million |
| Bus | PCIe 2.0 x16, AGP 8x | PCIe 2.1 x16 |
| DirectX Version | DirectX 10.1 | DirectX 11 |
| OpenGL Version | OpenGL 3.0 | OpenGL 4.1 |
Memory Bandwidth: Bandwidth is the largest amount of data (in units of MB per second) that can be moved over the external memory interface in one second. The number is worked out by multiplying the card's interface width by its memory speed. If the card has DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high 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 number of texture units by the core speed of the chip. The better this number, the better the 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 most pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.
Radeon HD 4670 1GBAmazon.com
Check prices at:
|
Radeon HD 6450 (OEM)Amazon.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
Be the first to leave a comment!