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GPU Comparison
AMD Radeon HD 6870 X2 vs AMD Radeon RX 7900 XT
AMD Radeon HD 6870 X2 vs AMD Radeon RX 7900 XT
VS
AMD Radeon HD 6870 X2
AMD Radeon RX 7900 XT
We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6870 X2 and 20GB VRAM Radeon RX 7900 XT 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 11 years and 4 months late
Boost Clock2394MHz
More VRAM (20GB vs 1024GB)
Larger VRAM bandwidth (800.0GB/s vs 134.4GB/s)
4256 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon HD 6870 X2
2.016 TFLOPS
Radeon RX 7900 XT
+2453%
51.48 TFLOPS
Radeon HD 6870 X2
VS
Radeon RX 7900 XT
Graphics Card
Jul 2011
Release Date
Nov 2022
Northern Islands
Generation
Navi III
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 4.0 x16
Clock Speeds
-
Base Clock
1387 MHz
-
Boost Clock
2394 MHz
1050 MHz
Memory Clock
2500 MHz
Memory
1024MB
Memory Size
20GB
GDDR5
Memory Type
GDDR6
256bit
Memory Bus
320bit
134.4GB/s
Bandwidth
800.0GB/s
Render Config
14
Compute Units
84
-
-
-
1120
Shading Units
5376
56
TMUs
336
32
ROPs
192
-
-
-
-
RT Cores
84
8 KB (per CU)
L1 Cache
256 KB per Array
512 KB
L2 Cache
6 MB
-
L3 Cache
80 MB
Theoretical Performance
28.80 GPixel/s
Pixel Rate
459.6 GPixel/s
50.40 GTexel/s
Texture Rate
804.4 GTexel/s
-
FP16 (half)
103.0 TFLOPS
2.016 TFLOPS
FP32 (float)
51.48 TFLOPS
-
FP64 (double)
1.609 TFLOPS
Board Design
300W
TDP
300W
700 W
Suggested PSU
700 W
2x DVI 1x HDMI 1.3a 2x mini-DisplayPort 1.1
Outputs
1x HDMI 2.1a 2x DisplayPort 2.1 1x USB Type-C
-
Power Connectors
2x 8-pin
Graphics Processor
Barts
GPU Name
Navi 31
Barts XT (215-0798000)
GPU Variant
Navi 31 XT (215-145000156)
TeraScale 2
Architecture
RDNA 3.0
TSMC
Foundry
TSMC
40 nm
Process Size
5 nm
1.7 billion
Transistors
57.7 billion
255 mm²
Die Size
529 mm²
Graphics Features
11.2 (11_0)
DirectX
12 Ultimate (12_2)
4.4
OpenGL
4.6
1.2
OpenCL
2.2
N/A
Vulkan
1.3
-
-
-
5.0
Shader Model
6.7
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