Radeon RX 6300 XT vs HD 6990M Crossfire

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Primary details

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

Place in the ranking503not rated
Place by popularitynot in top-100not in top-100
ArchitectureTerascale 2 (2009−2015)RDNA 2.0 (2020−2025)
GPU code nameBlackcomb XTXNavi 24
Market segmentLaptopDesktop
Release date12 July 2011 (14 years ago)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 cores22401024
Core clock speed715 MHzno data
Boost clock speedno data2500 MHz
Number of transistors2x1700 Millionno data
Manufacturing process technology40 nm7 nm
Power consumption (TDP)no data100 Watt
Texture fill rateno data160.0
Floating-point processing powerno data5.12 TFLOPS
ROPsno data32
TMUsno data64

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).

Laptop sizelargeno data
Interfaceno dataPCIe 4.0 x8
Widthno data2-slot
Supplementary power connectorsno data1x 6-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 typeGDDR5GDDR6
Maximum RAM amount2x2 GB4 GB
Memory bus width256 Bit64 Bit
Memory clock speed900 MHz16 GB/s
Memory bandwidthno data128.0 GB/s
Shared memory--
Resizable BAR-+

Connectivity and outputs

This section shows the types and number of video connectors on each GPU. The data applies specifically to desktop reference models (for example, NVIDIA’s Founders Edition). OEM partners often modify both the number and types of ports. On notebook GPUs, video‐output options are determined by the laptop’s design rather than the graphics chip itself.

Display Connectorsno data1x HDMI, 2x DisplayPort
HDMI-+

API and SDK compatibility

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

DirectX1112 Ultimate (12_2)
Shader Modelno data6.6
OpenGLno data4.6
OpenCLno data2.1
Vulkan-1.2

Pros & cons summary


Chip lithography 40 nm 7 nm

RX 6300 XT has a 471.4% more advanced lithography process.

We couldn't decide between Radeon HD 6990M Crossfire and Radeon RX 6300 XT. We've got no test results to judge.

Be aware that Radeon HD 6990M Crossfire is a notebook graphics card while Radeon RX 6300 XT is a desktop one.

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AMD Radeon HD 6990M Crossfire
Radeon HD 6990M Crossfire
AMD Radeon RX 6300 XT
Radeon RX 6300 XT

Other comparisons

We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.

Community ratings

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4 4 votes

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3.3 19 votes

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