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GPU Comparison
AMD Radeon RX 6900 XTX vs AMD Radeon HD 8490 OEM
AMD Radeon RX 6900 XTX vs AMD Radeon HD 8490 OEM
VS
AMD Radeon RX 6900 XTX
AMD Radeon HD 8490 OEM
We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 6900 XTX and 1024MB VRAM Radeon HD 8490 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon RX 6900 XTX 's Advantages
Boost Clock2435MHz
More VRAM (16GB vs 1GB)
Larger VRAM bandwidth (576.0GB/s vs 14.40GB/s)
4960 additional rendering cores
AMD Radeon HD 8490 OEM 's Advantages
Lower TDP (35W vs 330W)
Score
Benchmark
FP32 (float)
Radeon RX 6900 XTX
+8803%
24.93 TFLOPS
Radeon HD 8490 OEM
0.28 TFLOPS
Radeon RX 6900 XTX
VS
Radeon HD 8490 OEM
Graphics Card
Unknown
Release Date
Jul 2013
Navi II
Generation
Sea Islands
Desktop
Type
Desktop
PCIe 4.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
2075 MHz
Base Clock
-
2435 MHz
Boost Clock
-
2250 MHz
Memory Clock
900 MHz
Memory
16GB
Memory Size
1024MB
GDDR6
Memory Type
DDR3
256bit
Memory Bus
64bit
576.0GB/s
Bandwidth
14.40GB/s
Render Config
-
SM Count
-
80
Compute Units
2
5120
Shading Units
160
320
TMUs
8
128
ROPs
4
-
Tensor Cores
-
80
RT Cores
-
128 KB per Array
L1 Cache
8 KB (per CU)
4 MB
L2 Cache
128 KB
Theoretical Performance
311.7 GPixel/s
Pixel Rate
3.500 GPixel/s
779.2 GTexel/s
Texture Rate
7.000 GTexel/s
49.87 TFLOPS
FP16 (half)
-
24.93 TFLOPS
FP32 (float)
280.0 GFLOPS
1.558 TFLOPS
FP64 (double)
-
Graphics Processor
Navi 21
GPU Name
Caicos
Navi 21 XTXH (215-121000247)
GPU Variant
Caicos XTX
RDNA 2.0
Architecture
TeraScale 2
TSMC
Foundry
TSMC
7 nm
Process Size
40 nm
26.8 billion
Transistors
0.37 billion
520 mm²
Die Size
67 mm²
Board Design
330W
TDP
35W
700 W
Suggested PSU
200 W
1x HDMI 2.1 2x DisplayPort 1.4a 1x USB Type-C
Outputs
1x DVI 1x DisplayPort 1.1
2x 8-pin
Power Connectors
None
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
-
CUDA
-
6.5
Shader Model
5.0
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4
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5
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8
AMD Radeon RX 6900 XTX vs ATI Radeon HD 2600 PRO AGP
9
AMD Radeon RX 6900 XTX vs NVIDIA GeForce GT 730
10
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