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GPU Comparison
AMD Radeon R9 285 vs AMD Radeon RX 6900 XT
AMD Radeon R9 285 vs AMD Radeon RX 6900 XT
VS
AMD Radeon R9 285
AMD Radeon RX 6900 XT
We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 285 and 16GB VRAM Radeon RX 6900 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon R9 285 's Advantages
Lower TDP (190W vs 300W)
AMD Radeon RX 6900 XT 's Advantages
Released 6 years and 1 months late
Boost Clock2250MHz
More VRAM (16GB vs 2GB)
Larger VRAM bandwidth (512.0GB/s vs 176.0GB/s)
3328 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon R9 285
3.29 TFLOPS
Radeon RX 6900 XT
+600%
23.04 TFLOPS
Radeon R9 285
VS
Radeon RX 6900 XT
Graphics Card
Sep 2014
Release Date
Oct 2020
Volcanic Islands
Generation
Navi II
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 4.0 x16
Clock Speeds
-
Base Clock
1825 MHz
-
Boost Clock
2250 MHz
1375 MHz
Memory Clock
2000 MHz
Memory
2GB
Memory Size
16GB
GDDR5
Memory Type
GDDR6
256bit
Memory Bus
256bit
176.0GB/s
Bandwidth
512.0GB/s
Render Config
28
Compute Units
80
-
-
-
1792
Shading Units
5120
112
TMUs
320
32
ROPs
128
-
-
-
-
RT Cores
80
16 KB (per CU)
L1 Cache
128 KB per Array
512 KB
L2 Cache
4 MB
-
L3 Cache
128 MB
Theoretical Performance
29.38 GPixel/s
Pixel Rate
288.0 GPixel/s
102.8 GTexel/s
Texture Rate
720.0 GTexel/s
3.290 TFLOPS
FP16 (half)
46.08 TFLOPS
3.290 TFLOPS
FP32 (float)
23.04 TFLOPS
205.6 GFLOPS
FP64 (double)
1440 GFLOPS
Board Design
190W
TDP
300W
450 W
Suggested PSU
700 W
2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
Outputs
1x HDMI 2.1 2x DisplayPort 1.4a 1x USB Type-C
2x 6-pin
Power Connectors
2x 8-pin
Graphics Processor
Tonga
GPU Name
Navi 21
Tonga PRO (215-0851128)
GPU Variant
Navi 21 XTX (215-121000167)
GCN 3.0
Architecture
RDNA 2.0
TSMC
Foundry
TSMC
28 nm
Process Size
7 nm
5 billion
Transistors
26.8 billion
366 mm²
Die Size
520 mm²
Graphics Features
12 (12_0)
DirectX
12 Ultimate (12_2)
4.6
OpenGL
4.6
2.1
OpenCL
2.1
1.2.170
Vulkan
1.3
-
-
-
6.5
Shader Model
6.5
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