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Radeon HD 4850 1GB vs Radeon HD 7750
Intro
The Radeon HD 4850 1GB comes with a core clock frequency of 625 MHz and a GDDR4 memory speed of 993 MHz. It also features a 256-bit bus, and uses a 55 nm design. It features 800(160x5) SPUs, 40 Texture Address Units, and 16 Raster Operation Units.Compare all of that to the Radeon HD 7750, which comes with GPU core speed of 800 MHz, and 1024 MB of GDDR5 memory running at 1125 MHz through a 128-bit bus. It also features 512 Stream Processors, 32 TAUs, and 16 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 7750 |
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55 Watts |
| Radeon HD 4850 1GB |
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110 Watts |
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Memory Bandwidth
Theoretically, the Radeon HD 7750 should be a small bit faster than the Radeon HD 4850 1GB in general. (explain)
| Radeon HD 7750 |
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72000 MB/sec |
| Radeon HD 4850 1GB |
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63552 MB/sec |
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Texel Rate
The Radeon HD 7750 will be a small bit (more or less 2%) more effective at anisotropic filtering than the Radeon HD 4850 1GB. (explain)| Radeon HD 7750 |
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25600 Mtexels/sec |
| Radeon HD 4850 1GB |
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25000 Mtexels/sec |
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Pixel Rate
If using high levels of AA is important to you, then the Radeon HD 7750 is the winner, and very much so. (explain)| Radeon HD 7750 |
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12800 Mpixels/sec |
| Radeon HD 4850 1GB |
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10000 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 4850 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 4850 1GB | Radeon HD 7750 |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | Jun 25, 2008 | February 2012 |
| Code Name | RV770 PRO | Cape Verde Pro |
| Memory | 1024 MB | 1024 MB |
| Core Speed | 625 MHz | 800 MHz |
| Memory Speed | 1986 MHz | 4500 MHz |
| Power (Max TDP) | 110 watts | 55 watts |
| Bandwidth | 63552 MB/sec | 72000 MB/sec |
| Texel Rate | 25000 Mtexels/sec | 25600 Mtexels/sec |
| Pixel Rate | 10000 Mpixels/sec | 12800 Mpixels/sec |
| Unified Shaders | 800(160x5) | 512 |
| Texture Mapping Units | 40 | 32 |
| Render Output Units | 16 | 16 |
| Bus Type | GDDR4 | GDDR5 |
| Bus Width | 256-bit | 128-bit |
| Fab Process | 55 nm | 28 nm |
| Transistors | 956 million | 1500 million |
| Bus | PCIe 2.0 x16 | 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 maximum amount of data (measured in MB per second) that can be transported across the external memory interface in a second. The number is worked out by multiplying the bus width by its memory speed. If the card has DDR type RAM, it must be multiplied by 2 again. If 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 texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.
Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.
Radeon HD 4850 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 4850 1GB vs Radeon HD 7750”Radeon HD 7750, which features a clock frequency of 800 MHz and a GDDR5 memory frequency of 1125 MHz
and GDDR3 memory frequency of 800 MHz !!!!!
Sapphire PCI-Ex Radeon HD7750 2048MB GDDR3 (128bit) (800/1600) (VGA, DVI, HDMI)