Radeon RX 6600 XT vs RX 5900

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Primary details

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

Place in the rankingnot rated91
Place by popularitynot in top-10093
Cost-effectiveness evaluationno data63.02
Power efficiencyno data18.36
ArchitectureRDNA 2.0 (2020−2024)RDNA 2.0 (2020−2024)
GPU code nameNavi 21Navi 23
Market segmentDesktopDesktop
Release dateno data30 July 2021 (3 years ago)
Launch price (MSRP)no data$379

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 cores40962048
Core clock speedno data1968 MHz
Boost clock speed1635 MHz2589 MHz
Number of transistors21,000 million11,060 million
Manufacturing process technology7 nm7 nm
Power consumption (TDP)300 Watt160 Watt
Texture fill rate418.6331.4
Floating-point processing power13.39 TFLOPS10.6 TFLOPS
ROPs9664
TMUs256128
Ray Tracing Coresno data32

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 x16PCIe 4.0 x8
Lengthno data190 mm
Width2-slot2-slot
Supplementary power connectors2x 8-pin1x 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 typeGDDR6GDDR6
Maximum RAM amount12 GB8 GB
Memory bus width384 Bit128 Bit
Memory clock speed14000 MHz2000 MHz
Memory bandwidth672.0 GB/s256.0 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 Connectors1x HDMI, 3x DisplayPort1x HDMI, 2x DisplayPort
HDMI++

API compatibility

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

DirectX12 Ultimate (12_1)12.0 Ultimate (12_2)
Shader Modelno data6.5
OpenGL4.64.6
OpenCLno data2.1
Vulkan-1.2

Pros & cons summary


Maximum RAM amount 12 GB 8 GB
Power consumption (TDP) 300 Watt 160 Watt

RX 5900 has a 50% higher maximum VRAM amount.

RX 6600 XT, on the other hand, has 87.5% lower power consumption.

We couldn't decide between Radeon RX 5900 and Radeon RX 6600 XT. 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 5900
Radeon RX 5900
AMD Radeon RX 6600 XT
Radeon RX 6600 XT

Comparisons with similar GPUs

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Community ratings

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


3.5 15 votes

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4.3 4334 votes

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

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Questions & comments

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