CMP 40HX vs Radeon HD 6490

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Primary details

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

Place in performance rankingnot rated291
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluationno data25.29
ArchitectureTeraScale 2 (2009−2015)Turing (2018−2021)
GPU code nameRedwoodTU106
Market segmentDesktopDesktop
Release date4 July 2011 (13 years ago)25 February 2021 (3 years ago)
Launch price (MSRP)no data$699
Current price$800 $152 (0.2x MSRP)

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

no data

Detailed specifications

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 cores3202304
Core clock speed550 MHzno data
Boost clock speedno data1650 MHz
Number of transistors627 million10,800 million
Manufacturing process technology40 nm12 nm
Power consumption (TDP)39 Watt185 Watt
Texture fill rate8.800237.6
Floating-point performance352.0 gflopsno data

Form factor & 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).

InterfacePCIe 2.0 x16PCIe 3.0 x16
Length165 mm229 mm
Width1-slot2-slot
Supplementary power connectorsNone1x 8-pin

VRAM capacity and type

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 typeDDR2GDDR6
Maximum RAM amount1 GB8 GB
Memory bus width128 Bit256 Bit
Memory clock speed1000 MHz14 GB/s
Memory bandwidth16 GB/s448.0 GB/s

Connectivity and outputs

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 VGANo outputs
HDMI+no data

API compatibility

List of supported graphics and general-purpose computing APIs, including their specific versions.

DirectX11.2 (11_0)12 Ultimate (12_2)
Shader Model5.06.6
OpenGL4.44.6
OpenCL1.23.0
VulkanN/A1.2
CUDAno data7.5

Pros & cons summary


Recency 4 July 2011 25 February 2021
Maximum RAM amount 1 GB 8 GB
Chip lithography 40 nm 12 nm
Power consumption (TDP) 39 Watt 185 Watt

We couldn't decide between Radeon HD 6490 and CMP 40HX. We've got no test results to judge.


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

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AMD Radeon HD 6490
Radeon HD 6490
NVIDIA CMP 40HX
CMP 40HX

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Community ratings

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Questions & comments

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