NVIDIA GeForce 9800 GX2 vs NVIDIA GeForce GT 645 OEM
We compared two Desktop platform GPUs: 512MB VRAM GeForce 9800 GX2 and 1024MB VRAM GeForce GT 645 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GT 645 OEM 's Advantages
Released 4 years and 1 months late
More VRAM (1024GB vs 512GB)
Larger VRAM bandwidth (91.87GB/s vs 64.00GB/s)
160 additional rendering cores
Lower TDP (102W vs 197W)
Score
Benchmark
FP32 (float)
GeForce 9800 GX2
0.384 TFLOPS
GeForce GT 645 OEM
+132%
0.894 TFLOPS
Graphics Card
Mar 2008
Release Date
Apr 2012
GeForce 9
Generation
GeForce 600
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
-
-
-
-
-
1000 MHz
Memory Clock
957 MHz
Memory
512MB
Memory Size
1024MB
GDDR3
Memory Type
GDDR5
256bit
Memory Bus
192bit
64.00GB/s
Bandwidth
91.87GB/s
Render Config
-
-
-
16
SM Count
6
128
Shading Units
288
64
TMUs
48
16
ROPs
24
-
-
-
-
-
-
-
L1 Cache
64 KB (per SM)
64 KB
L2 Cache
384 KB
-
-
-
Theoretical Performance
9.600 GPixel/s
Pixel Rate
9.312 GPixel/s
38.40 GTexel/s
Texture Rate
37.25 GTexel/s
-
-
-
384.0 GFLOPS
FP32 (float)
894.0 GFLOPS
-
FP64 (double)
74.50 GFLOPS
Board Design
197W
TDP
102W
450 W
Suggested PSU
300 W
2x DVI
1x HDMI
Outputs
2x DVI
1x mini-HDMI 1.3a
1x 6-pin + 1x 8-pin
Power Connectors
-
Graphics Processor
G92
GPU Name
GF114
G92-450-A2
GPU Variant
-
Tesla
Architecture
Fermi 2.0
TSMC
Foundry
TSMC
65 nm
Process Size
40 nm
0.754 billion
Transistors
1.95 billion
324 mm²
Die Size
332 mm²
Graphics Features
11.1 (10_0)
DirectX
12 (11_0)
3.3
OpenGL
4.6
1.1
OpenCL
1.1
N/A
Vulkan
N/A
1.1
CUDA
2.1
4.0
Shader Model
5.1
