Radeon R9 390X2 vs RX 6600 XT

Primary details

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

Place in the ranking89not rated
Place by popularity87not in top-100
Cost-effectiveness evaluation63.50no data
Power efficiency18.59no data
ArchitectureRDNA 2.0 (2020−2024)GCN (2012−2015)
GPU code nameNavi 23no data
Market segmentDesktopDesktop
Release date30 July 2021 (3 years ago)no data (2024 years ago)
Launch price (MSRP)$379 no data

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

no data

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 cores20482
Core clock speed1968 MHzno data
Boost clock speed2589 MHz1000 MHz
Number of transistors11,060 millionno data
Manufacturing process technology7 nmno data
Power consumption (TDP)160 Wattno data
Texture fill rate331.4no data
Floating-point processing power10.6 TFLOPSno data
ROPs64no data
TMUs128no data
Ray Tracing Cores32no 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 4.0 x8no data
Length190 mmno data
Width2-slotno data
Supplementary power connectors1x 8-pinno data

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 typeGDDR6512
Maximum RAM amount8 GBno data
Memory bus width128 Bit5400 Bit
Memory clock speed2000 MHzno data
Memory bandwidth256.0 GB/sno data
Shared memory-no data

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 HDMI, 2x DisplayPortno data
HDMI+-

API compatibility

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

DirectX12.0 Ultimate (12_2)GDDR5
Shader Model6.5no data
OpenGL4.6no data
OpenCL2.1no data
Vulkan1.2-

Pros & cons summary


We couldn't decide between Radeon RX 6600 XT and Radeon R9 390X2. 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 RX 6600 XT
Radeon RX 6600 XT
AMD Radeon R9 390X2
Radeon R9 390X2

Comparisons with similar GPUs

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Community ratings

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4.3 4180 votes

Rate Radeon RX 6600 XT on a scale of 1 to 5:

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2.6 36 votes

Rate Radeon R9 390X2 on a scale of 1 to 5:

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Questions & comments

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