Radeon RX 7950 XTX vs 660M

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Primary details

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

Place in the ranking326not rated
Place by popularitynot in top-100not in top-100
Power efficiency28.20no data
ArchitectureRDNA 2.0 (2020−2024)RDNA 3.0 (2022−2024)
GPU code nameRembrandt+Navi 31
Market segmentDesktopDesktop
Release date3 January 2023 (1 year ago)no data (2024 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 cores3846144
Core clock speed1500 MHz2200 MHz
Boost clock speed1900 MHz3300 MHz
Number of transistors13,100 million57,700 million
Manufacturing process technology6 nm5 nm
Power consumption (TDP)40 Watt355 Watt
Texture fill rate45.601,267
Floating-point processing power1.459 TFLOPS81.1 TFLOPS
ROPs16192
TMUs24384
Ray Tracing Cores696

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 4.0 x8PCIe 4.0 x16
Lengthno data287 mm
WidthIGP2-slot
Supplementary power connectorsNone2x 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 typeSystem SharedGDDR6
Maximum RAM amountSystem Shared24 GB
Memory bus widthSystem Shared384 Bit
Memory clock speedSystem Shared2500 MHz
Memory bandwidthno data960.0 GB/s
Shared memory--

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 ConnectorsPortable Device Dependent1x HDMI 2.1a, 2x DisplayPort 2.1, 1x USB Type-C
HDMI-+

API compatibility

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

DirectX12 Ultimate (12_2)12 Ultimate (12_2)
Shader Model6.76.7
OpenGL4.64.6
OpenCL2.02.2
Vulkan1.31.3

Pros & cons summary


Chip lithography 6 nm 5 nm
Power consumption (TDP) 40 Watt 355 Watt

Radeon 660M has 787.5% lower power consumption.

RX 7950 XTX, on the other hand, has a 20% more advanced lithography process.

We couldn't decide between Radeon 660M and Radeon RX 7950 XTX. 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 660M
Radeon 660M
AMD Radeon RX 7950 XTX
Radeon RX 7950 XTX

Comparisons with similar GPUs

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Community ratings

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Questions & comments

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