Radeon RX 6900 vs GeForce 6800 XT

Place in the ranking	1310	22
Place by popularity	not in top-100	not in top-100
Power efficiency	no data	18.66
Architecture	Curie (2003−2013)	RDNA 2.0 (2020−2024)
GPU code name	NV42	Navi 21
Market segment	Desktop	Desktop
Release date	30 September 2005 (19 years ago)	28 October 2020 (4 years ago)

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 cores	no data	4608
Core clock speed	450 MHz	no data
Boost clock speed	no data	2105 MHz
Number of transistors	202 million	23,000 million
Manufacturing process technology	110 nm	7 nm
Power consumption (TDP)	no data	255 Watt
Texture fill rate	5.400	606.2
Floating-point processing power	no data	19.4 TFLOPS
ROPs	8	64
TMUs	12	288

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).

Interface	AGP 8x	PCIe 4.0 x16
Width	1-slot	2-slot
Supplementary power connectors	1x Molex	2x 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 type	GDDR3	GDDR6
Maximum RAM amount	256 MB	16 GB
Memory bus width	256 Bit	256 Bit
Memory clock speed	600 MHz	16 GB/s
Memory bandwidth	38.4 GB/s	512.0 GB/s

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 Connectors	1x DVI, 1x VGA, 1x S-Video	1x HDMI, 2x DisplayPort, 1x USB Type-C
HDMI	-	+

API compatibility

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

DirectX	9.0c (9_3)	12 Ultimate (12_2)
Shader Model	3.0	6.5
OpenGL	2.0 (full) 2.1 (partial)	4.6
OpenCL	N/A	2.0
Vulkan	N/A	1.2

Synthetic benchmark performance

Non-gaming benchmark results comparison. The combined score is measured on a 0-100 point scale.

Combined synthetic benchmark score

This is our combined benchmark score. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

6800 XT 0.32

RX 6900 69.42
+21594%

Passmark

This is the most ubiquitous GPU benchmark. It gives the graphics card a thorough evaluation under various types of load, providing four separate benchmarks for Direct3D versions 9, 10, 11 and 12 (the last being done in 4K resolution if possible), and few more tests engaging DirectCompute capabilities.

6800 XT 123

RX 6900 26751
+21649%

Gaming performance

Let's see how good the compared graphics cards are for gaming. Particular gaming benchmark results are measured in FPS.

Pros & cons summary

Performance score	0.32	69.42
Recency	30 September 2005	28 October 2020
Maximum RAM amount	256 MB	16 GB
Chip lithography	110 nm	7 nm

RX 6900 has a 21593.8% higher aggregate performance score, an age advantage of 15 years, a 6300% higher maximum VRAM amount, and a 1471.4% more advanced lithography process.

The Radeon RX 6900 is our recommended choice as it beats the GeForce 6800 XT in performance tests.

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