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Radeon HD 4650 512MB vs Radeon HD 5450
Intro
The Radeon HD 4650 512MB comes with a GPU core speed of 600 MHz, and the 512 MB of DDR2 RAM is set to run at 500 MHz through a 128-bit bus. It also is comprised of 320(64x5) SPUs, 32 Texture Address Units, and 8 Raster Operation Units.Compare all of that to the Radeon HD 5450, which uses a 40 nm design. AMD has clocked the core speed at 650 MHz. The DDR3 memory works at a speed of 800 MHz on this particular card. It features 80(16x5) SPUs along with 8 Texture Address Units and 4 Rasterization Operator Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 5450 |
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19 Watts |
| Radeon HD 4650 512MB |
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55 Watts |
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Memory Bandwidth
Theoretically, the Radeon HD 4650 512MB should be quite a bit faster than the Radeon HD 5450 overall. (explain)
| Radeon HD 4650 512MB |
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16000 MB/sec |
| Radeon HD 5450 |
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12800 MB/sec |
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Texel Rate
The Radeon HD 4650 512MB is a lot (about 269%) better at anisotropic filtering than the Radeon HD 5450. (explain)| Radeon HD 4650 512MB |
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19200 Mtexels/sec |
| Radeon HD 5450 |
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5200 Mtexels/sec |
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Pixel Rate
The Radeon HD 4650 512MB will be a lot (approximately 85%) better at anti-aliasing than the Radeon HD 5450, and also able to handle higher resolutions while still performing well. (explain)| Radeon HD 4650 512MB |
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4800 Mpixels/sec |
| Radeon HD 5450 |
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2600 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 4650 512MBAmazon.com
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Radeon HD 5450Amazon.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 4650 512MB | Radeon HD 5450 |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | Sep 10, 2008 | February 4, 2010 |
| Code Name | RV730 PRO | Cedar PRO |
| Memory | 512 MB | 512 MB |
| Core Speed | 600 MHz | 650 MHz |
| Memory Speed | 1000 MHz | 1600 MHz |
| Power (Max TDP) | 55 watts | 19 watts |
| Bandwidth | 16000 MB/sec | 12800 MB/sec |
| Texel Rate | 19200 Mtexels/sec | 5200 Mtexels/sec |
| Pixel Rate | 4800 Mpixels/sec | 2600 Mpixels/sec |
| Unified Shaders | 320(64x5) | 80(16x5) |
| Texture Mapping Units | 32 | 8 |
| Render Output Units | 8 | 4 |
| Bus Type | DDR2 | DDR3 |
| Bus Width | 128-bit | 64-bit |
| Fab Process | 55 nm | 40 nm |
| Transistors | 514 million | 292 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 3.2 |
Memory Bandwidth: Memory bandwidth is the maximum amount of information (measured in megabytes per second) that can be transported past the external memory interface within a second. It is calculated by multiplying the interface width by its memory speed. If it uses DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.
Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total texture units 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 in one second.
Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.
Radeon HD 4650 512MBAmazon.com
Check prices at:
|
Radeon HD 5450Amazon.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 4650 512MB vs Radeon HD 5450”[...] much. So a GFX will be needed, as I thought. Here is another nice comparison, no benches though: Radeon HD 4650 512MB vs Radeon HD 5450 – Performance Comparison Benchmarks @ Hardware Compare Reply With [...]