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Radeon HD 4670 1GB vs Radeon HD 7750
Intro
The Radeon HD 4670 1GB features a clock frequency of 750 MHz and a GDDR4/GDDR3/DDR3/DDR2 memory frequency of 1100 MHz. It also uses a 128-bit memory bus, and makes use of a 55 nm design. It is comprised of 320(64x5) SPUs, 32 Texture Address Units, and 8 ROPs.Compare all that to the Radeon HD 7750, which features a clock speed of 800 MHz and a GDDR5 memory frequency of 1125 MHz. It also features a 128-bit bus, and makes use of a 28 nm design. It is made up of 512 SPUs, 32 Texture Address Units, and 16 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 7750 |
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55 Watts |
| Radeon HD 4670 1GB |
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70 Watts |
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Memory Bandwidth
As far as performance goes, the Radeon HD 7750 should theoretically be much better than the Radeon HD 4670 1GB overall. (explain)
| Radeon HD 7750 |
|
72000 MB/sec |
| Radeon HD 4670 1GB |
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35200 MB/sec |
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Texel Rate
The Radeon HD 7750 will be a bit (more or less 7%) more effective at texture filtering than the Radeon HD 4670 1GB. (explain)| Radeon HD 7750 |
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25600 Mtexels/sec |
| Radeon HD 4670 1GB |
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24000 Mtexels/sec |
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Pixel Rate
If running with a high screen resolution is important to you, then the Radeon HD 7750 is a better choice, by a large margin. (explain)| Radeon HD 7750 |
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12800 Mpixels/sec |
| Radeon HD 4670 1GB |
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6000 Mpixels/sec |
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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
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Radeon HD 7750Amazon.com
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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 7750 |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | Sep 10, 2008 | February 2012 |
| Code Name | RV730 XT | Cape Verde Pro |
| Memory | 1024 MB | 1024 MB |
| Core Speed | 750 MHz | 800 MHz |
| Memory Speed | 2200 MHz | 4500 MHz |
| Power (Max TDP) | 70 watts | 55 watts |
| Bandwidth | 35200 MB/sec | 72000 MB/sec |
| Texel Rate | 24000 Mtexels/sec | 25600 Mtexels/sec |
| Pixel Rate | 6000 Mpixels/sec | 12800 Mpixels/sec |
| Unified Shaders | 320(64x5) | 512 |
| Texture Mapping Units | 32 | 32 |
| Render Output Units | 8 | 16 |
| Bus Type | GDDR4/GDDR3/DDR3/DDR2 | GDDR5 |
| Bus Width | 128-bit | 128-bit |
| Fab Process | 55 nm | 28 nm |
| Transistors | 514 million | 1500 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: Memory bandwidth is the largest amount of data (in units of megabytes per second) that can be transported past the external memory interface within a second. The number is calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.
Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better this number, the better the graphics 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 most pixels that the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.
Radeon HD 4670 1GBAmazon.com
Check prices at:
|
Radeon HD 7750Amazon.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 7750”[...] ya just found out at HWCOMPARE.com that HD7750 rated at only TDP 50W compared to HD4670's 70W and HD6670's 63W. Radeon HD 4670 1GB vs Radeon HD 7750 – Performance Comparison Benchmarks @ Hardware Compare [...]