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GPU Comparison
ATI Radeon HD 4870 Mac Edition vs AMD Radeon HD 7990
ATI Radeon HD 4870 Mac Edition vs AMD Radeon HD 7990
VS
ATI Radeon HD 4870 Mac Edition
AMD Radeon HD 7990
We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4870 Mac Edition and 3GB VRAM Radeon HD 7990 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 375W)
AMD Radeon HD 7990 's Advantages
Released 4 years and 3 months late
Boost Clock1000MHz
Larger VRAM bandwidth (288.0GB/s vs 108.8GB/s)
1248 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon HD 4870 Mac Edition
1.2 TFLOPS
Radeon HD 7990
+241%
4.096 TFLOPS
Radeon HD 4870 Mac Edition
VS
Radeon HD 7990
Graphics Card
Jan 2009
Release Date
Apr 2013
Radeon R700
Generation
Southern Islands
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
Base Clock
950 MHz
-
Boost Clock
1000 MHz
850 MHz
Memory Clock
1500 MHz
Memory
512MB
Memory Size
3GB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
384bit
108.8GB/s
Bandwidth
288.0GB/s
Render Config
-
SM Count
-
10
Compute Units
32
800
Shading Units
2048
40
TMUs
128
16
ROPs
32
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
256 KB
L2 Cache
768 KB
Theoretical Performance
12.00 GPixel/s
Pixel Rate
32.00 GPixel/s
30.00 GTexel/s
Texture Rate
128.0 GTexel/s
-
FP16 (half)
-
1200 GFLOPS
FP32 (float)
4.096 TFLOPS
240.0 GFLOPS
FP64 (double)
1024 GFLOPS
Graphics Processor
RV770
GPU Name
Malta
RV770 XT Mac (215-0669080)
GPU Variant
Malta XT (215-0849026)
TeraScale
Architecture
GCN 1.0
TSMC
Foundry
TSMC
55 nm
Process Size
28 nm
0.956 billion
Transistors
4.313 billion
256 mm²
Die Size
365 mm²
Board Design
150W
TDP
375W
450 W
Suggested PSU
750 W
1x DVI 1x mini-DisplayPort 1.0
Outputs
1x DVI 4x mini-DisplayPort 1.2
2x 6-pin
Power Connectors
2x 8-pin
Graphics Features
10.1 (10_1)
DirectX
12 (11_1)
3.3
OpenGL
4.6
1.1
OpenCL
1.2
N/A
Vulkan
1.2
-
CUDA
-
4.1
Shader Model
5.1
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