AMD Radeon RX 7900 XT vs AMD Radeon HD 6850 1440SP Edition
We compared two Desktop platform GPUs: 20GB VRAM Radeon RX 7900 XT and 1024MB VRAM Radeon HD 6850 1440SP Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon RX 7900 XT 's Advantages
Released 10 years and 3 months late
Boost Clock2394MHz
More VRAM (20GB vs 1024GB)
Larger VRAM bandwidth (800.0GB/s vs 128.0GB/s)
3936 additional rendering cores
AMD Radeon HD 6850 1440SP Edition 's Advantages
Lower TDP (151W vs 300W)
Score
Benchmark
FP32 (float)
Radeon RX 7900 XT
+2365%
51.48 TFLOPS
Radeon HD 6850 1440SP Edition
2.088 TFLOPS
Graphics Card
Nov 2022
Release Date
Aug 2012
Navi III
Generation
Northern Islands
Desktop
Type
Desktop
PCIe 4.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
1387 MHz
Base Clock
-
2394 MHz
Boost Clock
-
2500 MHz
Memory Clock
1000 MHz
Memory
20GB
Memory Size
1024MB
GDDR6
Memory Type
GDDR5
320bit
Memory Bus
256bit
800.0GB/s
Bandwidth
128.0GB/s
Render Config
84
Compute Units
18
-
-
-
5376
Shading Units
1440
336
TMUs
72
192
ROPs
32
-
-
-
84
RT Cores
-
256 KB per Array
L1 Cache
8 KB (per CU)
6 MB
L2 Cache
512 KB
80 MB
L3 Cache
-
Theoretical Performance
459.6 GPixel/s
Pixel Rate
23.20 GPixel/s
804.4 GTexel/s
Texture Rate
52.20 GTexel/s
103.0 TFLOPS
FP16 (half)
-
51.48 TFLOPS
FP32 (float)
2.088 TFLOPS
1.609 TFLOPS
FP64 (double)
417.6 GFLOPS
Board Design
300W
TDP
151W
700 W
Suggested PSU
450 W
1x HDMI 2.1a
2x DisplayPort 2.1
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 31
GPU Name
Cypress
Navi 31 XT
(215-145000156)
GPU Variant
Cypress PRO
(215-0735043)
RDNA 3.0
Architecture
TeraScale 2
TSMC
Foundry
TSMC
5 nm
Process Size
40 nm
57.7 billion
Transistors
2.154 billion
529 mm²
Die Size
334 mm²
Graphics Features
12 Ultimate (12_2)
DirectX
11.2 (11_0)
4.6
OpenGL
4.4
2.2
OpenCL
1.2
1.3
Vulkan
N/A
-
-
-
6.7
Shader Model
5.0
