Radeon HD 4650 vs HD 6450
Aggregated performance score
HD 4650 outperforms HD 6450 by 20% based on our aggregated benchmark results.
General info
GPU architecture, market segment, value for money and other general parameters compared.
| Place in performance ranking | 1186 | 1155 |
| Place by popularity | not in top-100 | not in top-100 |
| Architecture | TeraScale 2 (2009−2015) | TeraScale (2005−2013) |
| GPU code name | Caicos | RV730 |
| Market segment | Desktop | Desktop |
| Design | reference | no data |
| Release date | 7 April 2011 (13 years ago) | 10 September 2008 (15 years ago) |
| Launch price (MSRP) | $55 | no data |
| Current price | $166 (3x MSRP) | $154 |
Value for money
Performance to price ratio. The higher, the better.
HD 6450 and ATI HD 4650 have a nearly equal value for money.
Technical specs
General performance parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. These parameters indirectly speak of performance, but for precise assessment you have to consider their benchmark and gaming test results. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.
| Pipelines / CUDA cores | 160 | 320 |
| Core clock speed | no data | 600 MHz |
| Boost clock speed | 750 MHz | no data |
| Number of transistors | 370 million | 514 million |
| Manufacturing process technology | 40 nm | 55 nm |
| Power consumption (TDP) | 30 Watt | 48 Watt |
| Texture fill rate | 5.000 | 19.20 |
| Floating-point performance | 200.0 gflops | 384.0 gflops |
Size and compatibility
Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).
| Bus support | PCIe 2.0 x8 | no data |
| Interface | PCIe 2.0 x16 | PCIe 2.0 x16 |
| Length | 168 mm | 193 mm |
| Width | 1-slot | 1-slot |
| Supplementary power connectors | None | no data |
Memory
Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.
| Memory type | GDDR5 | GDDR3 |
| Maximum RAM amount | 1 GB | 256 MB |
| Memory bus width | 64 Bit | 128 Bit |
| Memory clock speed | 800 MHz | 1400 MHz |
| Memory bandwidth | 25.6 GB/s | 22.4 GB/s |
| Memory bandwidth | 8.5-12.8 GB/x (DDR3) or 25.6-28.8 GB/s (GDDR5) | no data |
Video outputs and ports
Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.
| Display Connectors | 1x DVI, 1x HDMI, 1x VGA | 2x DVI, 1x S-Video |
| Eyefinity | 1 | no data |
| Number of Eyefinity displays | 4 | no data |
| HDMI | + | no data |
| DisplayPort support | + | no data |
Technologies
Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.
| AppAcceleration | - | no data |
| CrossFire | 1 | no data |
| Enduro | - | no data |
| HD3D | - | no data |
| PowerTune | - | no data |
| TrueAudio | - | no data |
| ZeroCore | - | no data |
API support
List of supported graphics and general-purpose computing APIs, including their specific versions.
| DirectX | DirectX® 11 | 10.1 (10_1) |
| Shader Model | 5.0 | 4.1 |
| OpenGL | 4.4 | 3.3 |
| OpenCL | 1.2 | 1.1 |
| Vulkan | no data | N/A |
| Mantle | - | no data |
Synthetic benchmark performance
Non-gaming benchmark performance comparison. The combined score is measured on a 0-100 point scale.
Combined synthetic benchmark score
This is our combined benchmark performance score. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.
HD 4650 outperforms HD 6450 by 20% based on our aggregated benchmark results.
Passmark
This is the most ubiquitous GPU benchmark, part of Passmark PerformanceTest suite. It gives the graphics card a thorough evaluation under various types of load, providing four separate benchmarks for Direct3D versions 9, 10, 11 and 12 (the last being done in 4K resolution if possible), and few more tests engaging DirectCompute capabilities.
Benchmark coverage: 25%
HD 4650 outperforms HD 6450 by 20% in Passmark.
Gaming performance
Let's see how good the compared graphics cards are for gaming. Particular gaming benchmark results are measured in FPS.
Advantages and disadvantages
| Performance score | 0.51 | 0.61 |
| Recency | 7 April 2011 | 10 September 2008 |
| Maximum RAM amount | 1 GB | 256 MB |
| Chip lithography | 40 nm | 55 nm |
| Power consumption (TDP) | 30 Watt | 48 Watt |
The Radeon HD 4650 is our recommended choice as it beats the Radeon HD 6450 in performance tests.
Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.
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