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GPU Comparison
ATI Radeon HD 4870 Mac Edition vs AMD Radeon RX 6900 XT
ATI Radeon HD 4870 Mac Edition vs AMD Radeon RX 6900 XT
VS
ATI Radeon HD 4870 Mac Edition
AMD Radeon RX 6900 XT
We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4870 Mac Edition and 16GB VRAM Radeon RX 6900 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
ATI Radeon HD 4870 Mac Edition 's Advantages
Lower TDP (150W vs 300W)
AMD Radeon RX 6900 XT 's Advantages
Released 11 years and 9 months late
Boost Clock2250MHz
Larger VRAM bandwidth (512.0GB/s vs 108.8GB/s)
4320 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon HD 4870 Mac Edition
1.2 TFLOPS
Radeon RX 6900 XT
+1820%
23.04 TFLOPS
Radeon HD 4870 Mac Edition
VS
Radeon RX 6900 XT
Graphics Card
Jan 2009
Release Date
Oct 2020
Radeon R700
Generation
Navi II
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 4.0 x16
Clock Speeds
-
Base Clock
1825 MHz
-
Boost Clock
2250 MHz
850 MHz
Memory Clock
2000 MHz
Memory
512MB
Memory Size
16GB
GDDR5
Memory Type
GDDR6
256bit
Memory Bus
256bit
108.8GB/s
Bandwidth
512.0GB/s
Render Config
-
SM Count
-
10
Compute Units
80
800
Shading Units
5120
40
TMUs
320
16
ROPs
128
-
Tensor Cores
-
-
RT Cores
80
16 KB (per CU)
L1 Cache
128 KB per Array
256 KB
L2 Cache
4 MB
Theoretical Performance
12.00 GPixel/s
Pixel Rate
288.0 GPixel/s
30.00 GTexel/s
Texture Rate
720.0 GTexel/s
-
FP16 (half)
46.08 TFLOPS
1200 GFLOPS
FP32 (float)
23.04 TFLOPS
240.0 GFLOPS
FP64 (double)
1440 GFLOPS
Graphics Processor
RV770
GPU Name
Navi 21
RV770 XT Mac (215-0669080)
GPU Variant
Navi 21 XTX (215-121000167)
TeraScale
Architecture
RDNA 2.0
TSMC
Foundry
TSMC
55 nm
Process Size
7 nm
0.956 billion
Transistors
26.8 billion
256 mm²
Die Size
520 mm²
Board Design
150W
TDP
300W
450 W
Suggested PSU
700 W
1x DVI 1x mini-DisplayPort 1.0
Outputs
1x HDMI 2.1 2x DisplayPort 1.4a 1x USB Type-C
2x 6-pin
Power Connectors
2x 8-pin
Graphics Features
10.1 (10_1)
DirectX
12 Ultimate (12_2)
3.3
OpenGL
4.6
1.1
OpenCL
2.1
N/A
Vulkan
1.3
-
CUDA
-
4.1
Shader Model
6.5
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