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GPU Comparison
AMD Radeon HD 7870 XT vs ATI Radeon HD 4850 X2
AMD Radeon HD 7870 XT vs ATI Radeon HD 4850 X2
VS
AMD Radeon HD 7870 XT
ATI Radeon HD 4850 X2
We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7870 XT and 512MB VRAM Radeon HD 4850 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 7870 XT 's Advantages
Released 4 years late
Boost Clock975MHz
Larger VRAM bandwidth (192.0GB/s vs 63.68GB/s)
736 additional rendering cores
Lower TDP (185W vs 250W)
Score
Benchmark
FP32 (float)
Radeon HD 7870 XT
+199%
2.995 TFLOPS
Radeon HD 4850 X2
1 TFLOPS
Radeon HD 7870 XT
VS
Radeon HD 4850 X2
Graphics Card
Nov 2012
Release Date
Nov 2008
Southern Islands
Generation
Radeon R700
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
925 MHz
Base Clock
-
975 MHz
Boost Clock
-
1500 MHz
Memory Clock
995 MHz
Memory
2GB
Memory Size
512MB
GDDR5
Memory Type
GDDR3
256bit
Memory Bus
256bit
192.0GB/s
Bandwidth
63.68GB/s
Render Config
-
SM Count
-
24
Compute Units
10
1536
Shading Units
800
96
TMUs
40
32
ROPs
16
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
512 KB
L2 Cache
256 KB
Theoretical Performance
31.20 GPixel/s
Pixel Rate
10.00 GPixel/s
93.60 GTexel/s
Texture Rate
25.00 GTexel/s
-
FP16 (half)
-
2.995 TFLOPS
FP32 (float)
1000 GFLOPS
748.8 GFLOPS
FP64 (double)
200.0 GFLOPS
Graphics Processor
Tahiti
GPU Name
R700
Tahiti LE (215-0821122)
GPU Variant
R700 PRO (215-0669065)
GCN 1.0
Architecture
TeraScale
TSMC
Foundry
TSMC
28 nm
Process Size
55 nm
4.313 billion
Transistors
0.956 billion
352 mm²
Die Size
256 mm²
Board Design
185W
TDP
250W
450 W
Suggested PSU
600 W
1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2
Outputs
4x DVI 1x S-Video
2x 6-pin
Power Connectors
1x 6-pin + 1x 8-pin
Graphics Features
12 (11_1)
DirectX
10.1 (10_1)
4.6
OpenGL
3.3
1.2
OpenCL
1.1
1.2
Vulkan
N/A
-
CUDA
-
5.1
Shader Model
4.1
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