Riva 128 PCI vs Radeon HD 6490

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Primary details

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

Place in the rankingnot ratednot rated
Place by popularitynot in top-100not in top-100
ArchitectureTeraScale 2 (2009−2015)no data
GPU code nameRedwoodNV3
Market segmentDesktopDesktop
Release date4 July 2011 (13 years ago)1 April 1997 (27 years ago)

Detailed specifications

General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores320no data
Core clock speed550 MHz100 MHz
Number of transistors627 million4 million
Manufacturing process technology40 nm350 nm
Power consumption (TDP)39 Watt4 Watt
Texture fill rate8.8000.1
Floating-point processing power0.352 TFLOPSno data
ROPs81
TMUs161

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 x16PCI
Length165 mmno data
Width1-slot1-slot
Supplementary power connectorsNoneNone

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 typeDDR2SDR
Maximum RAM amount1 GB4 MB
Memory bus width128 Bit128 Bit
Memory clock speed500 MHz100 MHz
Memory bandwidth16 GB/s1.6 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 VGA1x VGA, 1x DB13W3
HDMI+-

API compatibility

List of supported 3D and general-purpose computing APIs, including their specific versions.

DirectX11.2 (11_0)5.0
Shader Model5.0no data
OpenGL4.41.0
OpenCL1.2N/A
VulkanN/AN/A

Pros & cons summary


Recency 4 July 2011 1 April 1997
Maximum RAM amount 1 GB 4 MB
Chip lithography 40 nm 350 nm
Power consumption (TDP) 39 Watt 4 Watt

HD 6490 has an age advantage of 14 years, a 25500% higher maximum VRAM amount, and a 775% more advanced lithography process.

Riva 128 PCI, on the other hand, has 875% lower power consumption.

We couldn't decide between Radeon HD 6490 and Riva 128 PCI. 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 Riva 128 PCI
Riva 128 PCI

Comparisons with similar GPUs

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Community ratings

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