ATI HD 4650 vs AMD HD 6450

Price now 229$
Games supported 46%
AMD Radeon HD 6450
Radeon HD 6450
  • Interface PCIe 2.0 x16
  • Core clock speed 0
  • Max video memory 1024 MB
  • Memory type GDDR5
  • Memory clock speed 800
  • Maximum resolution
ATI Radeon HD 4650
ATI Radeon HD 4650
  • Interface PCIe 2.0 x16
  • Core clock speed 600 MHz
  • Max video memory 256 MB
  • Memory type GDDR3
  • Memory clock speed 1400 MHz
  • Maximum resolution
Price now 148$
Games supported 47%

General info

GPU architecture, market segment, value for money and other general parameters compared.

Place in performance rating11281113
ArchitectureTeraScale 2 (2009−2015)TeraScale (2005−2013)
GPU code nameCaicosRV730
Market segmentDesktopDesktop
Designreferenceno data
Release date7 April 2011 (11 years old)10 September 2008 (14 years old)
Launch price (MSRP)$55 no data
Current price$229 (4.2x MSRP)$148
Value for money

Performance to price ratio. The higher, the better.

  • 0
  • 50
  • 100
  • 0
  • 50
  • 100

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 cores160320
Core clock speedno data600 MHz
Boost clock speed750 MHzno data
Number of transistors370 million514 million
Manufacturing process technology40 nm55 nm
Thermal design power (TDP)30 Watt48 Watt
Texture fill rate5.00019.20
Floating-point performance200.0 gflops384.0 gflops

Dimensions and compatibility

Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop video cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).

Bus supportPCIe 2.0 x8no data
InterfacePCIe 2.0 x16PCIe 2.0 x16
Length168 mm193 mm
Supplementary power connectorsNoneno data


Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated VRAM and use a shared part of system RAM.

Memory typeGDDR5GDDR3
Maximum RAM amount1 GB256 MB
Memory bus width64 Bit128 Bit
Memory clock speed800 MHz1400 MHz
Memory bandwidth25.6 GB/s22.4 GB/s
Memory bandwidth8.5-12.8 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 Connectors1x DVI, 1x HDMI, 1x VGA2x DVI, 1x S-Video
Eyefinity1no data
Number of Eyefinity displays4no data
HDMI+no data
DisplayPort support+no data


Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.

AppAcceleration-no data
CrossFire1no data
Enduro-no data
HD3D-no data
PowerTune-no data
TrueAudio-no data
ZeroCore-no data

API support

APIs supported, including particular versions of those APIs.

DirectXDirectX® 1110.1 (10_1)
Shader Model5.04.1
Vulkanno dataN/A
Mantle-no data

Benchmark performance

Non-gaming benchmark performance comparison. Note that overall benchmark performance is measured in points in 0-100 range.

Overall score

This is our combined benchmark performance rating. 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 6450 0.51
ATI HD 4650 0.54
  • Passmark


This is probably the most ubiquitous benchmark, part of Passmark PerformanceTest suite. It gives the graphics card a thorough evaluation under various 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: 24%

HD 6450 200
ATI HD 4650 214

Radeon HD 4650 outperforms Radeon HD 6450 by 7% in Passmark.

Mining hashrates

Cryptocurrency mining performance of Radeon HD 6450 and Radeon HD 4650. Usually measured in megahashes per second.

Bitcoin / BTC (SHA256) 19 Mh/s no data

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 rating 0.51 0.54
Recency 7 April 2011 10 September 2008
Memory bus width 64 128
Memory bandwidth 25.6 22.4
Pipelines / CUDA cores 160 320
Chip lithography 40 nm 55 nm
Thermal design power (TDP) 30 Watt 48 Watt

Technical City couldn't decide between

AMD Radeon HD 6450
Radeon HD 6450


ATI Radeon HD 4650
Radeon HD 4650

The differences in performance seem too small.

Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.

Cast your vote

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite graphics card.

Competitors of Radeon HD 6450 by NVIDIA

We believe that the nearest equivalent to Radeon HD 6450 from NVIDIA is GeForce 7950 GX2, which is nearly equal in speed and higher by 1 position in our rating.

NVIDIA GeForce 7950 GX2 GeForce 7950 GX2

Here are some closest NVIDIA rivals to Radeon HD 6450:

Radeon HD 6450 100

Competitors of Radeon HD 4650 by NVIDIA

We believe that the nearest equivalent to Radeon HD 4650 from NVIDIA is GeForce GT 220, which is nearly equal in speed and is lower by 1 position in our rating.

NVIDIA GeForce GT 220 GeForce GT 220

Here are some closest NVIDIA rivals to Radeon HD 4650:

Radeon HD 4650 100

Similar GPU comparisons

We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.

User rating

Here you can see the user rating of the graphics cards, as well as rate them yourself.

3 269 votes

Rate AMD Radeon HD 6450 on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5
3.3 111 votes

Rate ATI Radeon HD 4650 on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5

Questions and comments

Here you can ask a question about this comparison, agree or disagree with our judgements, or report an error or mismatch.