NVIDIA GeForce GTX 770 vs NVIDIA GeForce GT 620
We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 770 and 1024MB VRAM GeForce GT 620 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GTX 770 's Advantages
Released 1 years late
Boost Clock1085MHz
More VRAM (2GB vs 1024GB)
Larger VRAM bandwidth (224.4GB/s vs 14.40GB/s)
1440 additional rendering cores
NVIDIA GeForce GT 620 's Advantages
Lower TDP (49W vs 230W)
Score
Benchmark
FP32 (float)
GeForce GTX 770
+1139%
3.333 TFLOPS
GeForce GT 620
0.269 TFLOPS
3DMark Time Spy
GeForce GTX 770
+2215%
2153
GeForce GT 620
93
Graphics Card
May 2013
Release Date
May 2012
GeForce 700
Generation
GeForce 600
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
1046 MHz
Base Clock
-
1085 MHz
Boost Clock
-
1753 MHz
Memory Clock
900 MHz
Memory
2GB
Memory Size
1024MB
GDDR5
Memory Type
DDR3
256bit
Memory Bus
64bit
224.4GB/s
Bandwidth
14.40GB/s
Render Config
-
-
-
-
SM Count
2
1536
Shading Units
96
128
TMUs
16
32
ROPs
4
-
-
-
-
-
-
16 KB (per SMX)
L1 Cache
64 KB (per SM)
512 KB
L2 Cache
128 KB
-
-
-
Theoretical Performance
34.72 GPixel/s
Pixel Rate
2.800 GPixel/s
138.9 GTexel/s
Texture Rate
11.20 GTexel/s
-
-
-
3.333 TFLOPS
FP32 (float)
268.8 GFLOPS
138.9 GFLOPS
FP64 (double)
22.40 GFLOPS
Board Design
230W
TDP
49W
550 W
Suggested PSU
200 W
2x DVI
1x HDMI 1.4a
1x DisplayPort 1.2
Outputs
1x DVI
1x HDMI 1.3a
1x VGA
1x 6-pin + 1x 8-pin
Power Connectors
None
Graphics Processor
GK104
GPU Name
GF108
GK104-425-A2
GPU Variant
GF108-100-KB-A1
Kepler
Architecture
Fermi
TSMC
Foundry
TSMC
28 nm
Process Size
40 nm
3.54 billion
Transistors
0.585 billion
294 mm²
Die Size
116 mm²
Graphics Features
12 (11_0)
DirectX
12 (11_0)
4.6
OpenGL
4.6
3.0
OpenCL
1.1
1.1
Vulkan
N/A
3.0
CUDA
2.1
5.1
Shader Model
5.1
