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GPU Comparison
AMD Radeon R9 285 vs NVIDIA GeForce GT 645 OEM
AMD Radeon R9 285 vs NVIDIA GeForce GT 645 OEM
VS
AMD Radeon R9 285
NVIDIA GeForce GT 645 OEM
We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 285 and 1024MB VRAM GeForce GT 645 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon R9 285 's Advantages
Released 2 years and 5 months late
More VRAM (2GB vs 1GB)
Larger VRAM bandwidth (176.0GB/s vs 91.87GB/s)
1504 additional rendering cores
NVIDIA GeForce GT 645 OEM 's Advantages
Lower TDP (102W vs 190W)
Score
Benchmark
FP32 (float)
Radeon R9 285
+268%
3.29 TFLOPS
GeForce GT 645 OEM
0.894 TFLOPS
Radeon R9 285
VS
GeForce GT 645 OEM
Graphics Card
Sep 2014
Release Date
Apr 2012
Volcanic Islands
Generation
GeForce 600
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
1375 MHz
Memory Clock
957 MHz
Memory
2GB
Memory Size
1024MB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
192bit
176.0GB/s
Bandwidth
91.87GB/s
Render Config
-
SM Count
6
28
Compute Units
-
1792
Shading Units
288
112
TMUs
48
32
ROPs
24
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
64 KB (per SM)
512 KB
L2 Cache
384 KB
Theoretical Performance
29.38 GPixel/s
Pixel Rate
9.312 GPixel/s
102.8 GTexel/s
Texture Rate
37.25 GTexel/s
3.290 TFLOPS
FP16 (half)
-
3.290 TFLOPS
FP32 (float)
894.0 GFLOPS
205.6 GFLOPS
FP64 (double)
74.50 GFLOPS
Graphics Processor
Tonga
GPU Name
GF114
Tonga PRO (215-0851128)
GPU Variant
-
GCN 3.0
Architecture
Fermi 2.0
TSMC
Foundry
TSMC
28 nm
Process Size
40 nm
5 billion
Transistors
1.95 billion
366 mm²
Die Size
332 mm²
Board Design
190W
TDP
102W
450 W
Suggested PSU
300 W
2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
Outputs
2x DVI 1x mini-HDMI 1.3a
2x 6-pin
Power Connectors
-
Graphics Features
12 (12_0)
DirectX
12 (11_0)
4.6
OpenGL
4.6
2.1
OpenCL
1.1
1.2.170
Vulkan
N/A
-
CUDA
2.1
6.5
Shader Model
5.1
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