Radeon RX 6750 XT vs Radeon HD 3870 X2
We compared two Desktop platform GPUs: 12GB VRAM Radeon RX 6750 XT and 512MB VRAM Radeon HD 3870 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
Radeon RX 6750 XT Advantages
Released 14 years and 2 months late
Boost Clock2600MHz
More VRAM (12GB vs 512GB)
Larger VRAM bandwidth (432.0GB/s vs 57.66GB/s)
2240 additional rendering cores
Radeon HD 3870 X2 Advantages
Lower TDP (165W vs 250W)
Score
Benchmark
FP32 (float)
Radeon RX 6750 XT
+2420%
13310
Radeon HD 3870 X2
528
Graphics Card
Mar 2022
Release Date
Jan 2008
Navi II
Generation
Radeon R600
Desktop
Type
Desktop
PCIe 4.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
2150 MHz
Base Clock
-
2600 MHz
Boost Clock
-
2250 MHz
Memory Clock
901 MHz
Memory
12GB
Memory Size
512MB
GDDR6
Memory Type
GDDR3
192bit
Memory Bus
256bit
432.0GB/s
Bandwidth
57.66GB/s
Render Config
40
Compute Units
4
2560
Shading Units
320
160
TMUs
16
64
ROPs
16
40
RT Cores
-
128 KB per Array
L1 Cache
-
3 MB
L2 Cache
256 KB
96 MB
L3 Cache
-
Theoretical Performance
166.4 GPixel/s
Pixel Rate
13.20 GPixel/s
416.0 GTexel/s
Texture Rate
13.20 GTexel/s
26.62 TFLOPS
FP16 (half)
-
13.31 TFLOPS
FP32 (float)
528.0 GFLOPS
832.0 GFLOPS
FP64 (double)
105.6 GFLOPS
Board Design
250W
TDP
165W
600 W
Suggested PSU
450 W
1x HDMI 2.1
3x DisplayPort 1.4a
3x DisplayPort 1.4a
Outputs
2x DVI
1x S-Video
1x S-Video
1x 6-pin + 1x 8-pin
Power Connectors
1x 6-pin + 1x 8-pin
Graphics Processor
Navi 22
GPU Name
R680
Navi 22 KXT
(215-127000144)
(215-127000144)
GPU Variant
R680 XT
(215-0708017)
(215-0708017)
RDNA 2.0
Architecture
TeraScale
TSMC
Foundry
TSMC
7 nm
Process Size
55 nm
17.2 billion
Transistors
0.666 billion
335 mm²
Die Size
192 mm²
Graphics Features
12 Ultimate (12_2)
DirectX
10.1 (10_1)
4.6
OpenGL
3.3 (full)
4.0 (partial)
4.0 (partial)
2.1
OpenCL
N/A
1.3
Vulkan
N/A
6.5
Shader Model
4.1
