ATI Radeon X800 XT Mac Edition vs RX 6900 XT

Primary details

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

Place in the ranking21not rated
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation29.88no data
Power efficiency16.14no data
ArchitectureRDNA 2.0 (2020−2024)R400 (2004−2008)
GPU code nameNavi 21R423
Market segmentDesktopDesktop
Release date28 October 2020 (4 years ago)1 December 2004 (19 years ago)
Launch price (MSRP)$999 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 cores5120no data
Core clock speed1825 MHz475 MHz
Boost clock speed2250 MHzno data
Number of transistors26,800 million160 million
Manufacturing process technology7 nm130 nm
Power consumption (TDP)300 Watt54 Watt
Texture fill rate720.07.600
Floating-point processing power23.04 TFLOPSno data
ROPs12816
TMUs32016
Ray Tracing Cores80no 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 x16AGP Pro 8x
Length267 mmno data
Width3-slot1-slot
Supplementary power connectors2x 8-pinNone

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 typeGDDR6GDDR3
Maximum RAM amount16 GB256 MB
Memory bus width256 Bit256 Bit
Memory clock speed2000 MHz500 MHz
Memory bandwidth512.0 GB/s32 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, 2x DisplayPort, 1x USB Type-C2x DVI
HDMI+-

API compatibility

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

DirectX12 Ultimate (12_2)9.0b (9_2)
Shader Model6.5no data
OpenGL4.62.0
OpenCL2.1N/A
Vulkan1.2N/A

Pros & cons summary


Recency 28 October 2020 1 December 2004
Maximum RAM amount 16 GB 256 MB
Chip lithography 7 nm 130 nm
Power consumption (TDP) 300 Watt 54 Watt

RX 6900 XT has an age advantage of 15 years, a 6300% higher maximum VRAM amount, and a 1757.1% more advanced lithography process.

ATI X800 XT Mac Edition, on the other hand, has 455.6% lower power consumption.

We couldn't decide between Radeon RX 6900 XT and Radeon X800 XT Mac Edition. 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 6900 XT
Radeon RX 6900 XT
ATI Radeon X800 XT Mac Edition
Radeon X800 XT Mac Edition

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