 |
 |
Radeon HD 4670 1GB vs Radeon HD 7950
Intro
The Radeon HD 4670 1GB comes with a clock frequency of 750 MHz and a GDDR4/GDDR3/DDR3/DDR2 memory speed of 1100 MHz. It also uses a 128-bit bus, and makes use of a 55 nm design. It is comprised of 320(64x5) SPUs, 32 TAUs, and 8 Raster Operation Units.Compare those specs to the Radeon HD 7950, which has a core clock speed of 800 MHz and a GDDR5 memory speed of 1250 MHz. It also uses a 384-bit bus, and uses a 28 nm design. It is made up of 1792 SPUs, 112 TAUs, and 32 Raster Operation Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 4670 1GB |
|
70 Watts |
| Radeon HD 7950 |
|
200 Watts |
|
|
Memory Bandwidth
Theoretically, the Radeon HD 7950 should be quite a bit faster than the Radeon HD 4670 1GB in general. (explain)
| Radeon HD 7950 |
|
240000 MB/sec |
| Radeon HD 4670 1GB |
|
35200 MB/sec |
|
|
Texel Rate
The Radeon HD 7950 is quite a bit (more or less 273%) more effective at anisotropic filtering than the Radeon HD 4670 1GB. (explain)| Radeon HD 7950 |
|
89600 Mtexels/sec |
| Radeon HD 4670 1GB |
|
24000 Mtexels/sec |
|
|
Pixel Rate
The Radeon HD 7950 is quite a bit (approximately 327%) better at anti-aliasing than the Radeon HD 4670 1GB, and capable of handling higher screen resolutions without losing too much performance. (explain)| Radeon HD 7950 |
|
25600 Mpixels/sec |
| Radeon HD 4670 1GB |
|
6000 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 7950Amazon.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 7950 |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | Sep 10, 2008 | January 2012 |
| Code Name | RV730 XT | Tahiti Pro |
| Memory | 1024 MB | 1536 MB |
| Core Speed | 750 MHz | 800 MHz |
| Memory Speed | 2200 MHz | 5000 MHz |
| Power (Max TDP) | 70 watts | 200 watts |
| Bandwidth | 35200 MB/sec | 240000 MB/sec |
| Texel Rate | 24000 Mtexels/sec | 89600 Mtexels/sec |
| Pixel Rate | 6000 Mpixels/sec | 25600 Mpixels/sec |
| Unified Shaders | 320(64x5) | 1792 |
| Texture Mapping Units | 32 | 112 |
| Render Output Units | 8 | 32 |
| Bus Type | GDDR4/GDDR3/DDR3/DDR2 | GDDR5 |
| Bus Width | 128-bit | 384-bit |
| Fab Process | 55 nm | 28 nm |
| Transistors | 514 million | 4313 million |
| Bus | PCIe 2.0 x16, AGP 8x | PCIe 3.0 x16 |
| DirectX Version | DirectX 10.1 | DirectX 11.1 |
| OpenGL Version | OpenGL 3.0 | OpenGL 4.2 |
Memory Bandwidth: Bandwidth is the max amount of information (counted in megabytes per second) that can be transferred over the external memory interface in one second. It's calculated by multiplying the card's bus width by its memory speed. In the case of DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.
Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This figure is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one 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. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as 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, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.
Radeon HD 4670 1GBAmazon.com
Check prices at:
|
Radeon HD 7950Amazon.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 4670 1GB vs Radeon HD 7950”I have both 4670 1gb hdmi and 7950 3gb and am amazed how much the older and vastly smaller card can keep up doing general video watching. the power and heat savings is inverted too. i would have thought that the low power use would equate to no performance. that is so with new games but not with streaming video in both linux mint17.1 and windows 7 x64 professional. windows does have a much higher video card demand just running the OS for some reason as MInt 17.1 Mate has more 'eye candy' with Compiz -both computers eash have 8gb of ram and same phenom II 4 965BE and psu:750w components. linux 3D/2D and the 4000hd series amd drivers are out of the question so the x.org drivers do that work. i used 1080p, 1920x1080 monitor -24" and anLG 55" Plasma with compiz all jazzed up with the 4670 not a hitch or stutter no screen or image corruption and played you tube, metv streaming vid perfectly clearly.