Radeon RX 6800 XT vs VIA Castle Rock

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Primary details

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

Place in the rankingnot rated28
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluationno data50.58
Power efficiencyno data14.84
Architectureno dataRDNA 2.0 (2020−2024)
GPU code nameCLE266Navi 21
Market segmentLaptopDesktop
Release date1 January 2003 (21 year ago)28 October 2020 (4 years ago)
Launch price (MSRP)no data$649

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 cores34608
Core clock speed2 MHz1825 MHz
Boost clock speedno data2250 MHz
Number of transistorsno data26,800 million
Manufacturing process technologyno data7 nm
Power consumption (TDP)no data300 Watt
Texture fill rateno data648.0
Floating-point processing powerno data20.74 TFLOPS
ROPsno data128
TMUsno data288
Ray Tracing Coresno data72

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).

Interfaceno dataPCIe 4.0 x16
Lengthno data267 mm
Widthno data2-slot
Supplementary power connectorsno data2x 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 typeno dataGDDR6
Maximum RAM amountno data16 GB
Memory bus widthno data256 Bit
Memory clock speedno data2000 MHz
Memory bandwidthno data512.0 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 Connectorsno data1x HDMI, 2x DisplayPort, 1x USB Type-C
HDMI-+

API compatibility

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

DirectXno data12 Ultimate (12_2)
Shader Modelno data6.5
OpenGLno data4.6
OpenCLno data2.1
Vulkan-1.2

Pros & cons summary


Recency 1 January 2003 28 October 2020

RX 6800 XT has an age advantage of 17 years.

We couldn't decide between VIA Castle Rock and Radeon RX 6800 XT. We've got no test results to judge.

Be aware that VIA Castle Rock is a notebook card while Radeon RX 6800 XT is a desktop one.


Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.

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VIA Castle Rock
Castle Rock
AMD Radeon RX 6800 XT
Radeon RX 6800 XT

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Community ratings

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4.3 3554 votes

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Questions & comments

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