Home GPU Comparison AMD Radeon RX 6800 vs AMD Radeon HD 6790

AMD Radeon RX 6800 vs AMD Radeon HD 6790

We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 6800 and 1024MB VRAM Radeon HD 6790 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6800 's Advantages
Released 9 years and 6 months late
Boost Clock2105MHz
More VRAM (16GB vs 1024GB)
Larger VRAM bandwidth (512.0GB/s vs 134.4GB/s)
3040 additional rendering cores
AMD Radeon HD 6790 's Advantages
Lower TDP (150W vs 250W)

Score

Benchmark

FP32 (float)
Radeon RX 6800 +1103%
16.17 TFLOPS
Radeon HD 6790
1.344 TFLOPS
VS

Graphics Card

Oct 2020
Release Date
Apr 2011
Navi II
Generation
Northern Islands
Desktop
Type
Desktop
PCIe 4.0 x16
Bus Interface
PCIe 2.0 x16

Clock Speeds

1700 MHz
Base Clock
-
2105 MHz
Boost Clock
-
2000 MHz
Memory Clock
1050 MHz

Memory

16GB
Memory Size
1024MB
GDDR6
Memory Type
GDDR5
256bit
Memory Bus
256bit
512.0GB/s
Bandwidth
134.4GB/s

Render Config

60
Compute Units
10
-
-
-
3840
Shading Units
800
240
TMUs
40
96
ROPs
16
-
-
-
60
RT Cores
-
128 KB per Array
L1 Cache
8 KB (per CU)
4 MB
L2 Cache
512 KB
128 MB
L3 Cache
-

Theoretical Performance

202.1 GPixel/s
Pixel Rate
13.44 GPixel/s
505.2 GTexel/s
Texture Rate
33.60 GTexel/s
32.33 TFLOPS
FP16 (half)
-
16.17 TFLOPS
FP32 (float)
1344 GFLOPS
1010 GFLOPS
FP64 (double)
-

Board Design

250W
TDP
150W
600 W
Suggested PSU
450 W
1x HDMI 2.1 2x DisplayPort 1.4a 1x USB Type-C
Outputs
2x DVI 1x HDMI 1.3a 1x DisplayPort 1.1
2x 8-pin
Power Connectors
2x 6-pin

Graphics Processor

Navi 21
GPU Name
Barts
Navi 21 XL (215-121000187)
GPU Variant
Barts LE (215-0798002)
RDNA 2.0
Architecture
TeraScale 2
TSMC
Foundry
TSMC
7 nm
Process Size
40 nm
26.8 billion
Transistors
1.7 billion
520 mm²
Die Size
255 mm²

Graphics Features

12 Ultimate (12_2)
DirectX
11.2 (11_0)
4.6
OpenGL
4.4
2.1
OpenCL
1.2
1.3
Vulkan
N/A
-
-
-
6.5
Shader Model
5.0

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