GPU Comparison
GEFORCE
NVIDIA GeForce GTX 680
CORE STATE
GK104
VRAM
2 GB
CLOCK SPEED
1058 MHz
TDP
195 W
BUS WIDTH
256 bit
ARCHITECTURE
Kepler
PROCESS
28 nm
LAUNCH DATE
2012
VS
GEFORCE
Tesla K40c
CORE STATE
GK180
VRAM
12 GB
CLOCK SPEED
876 MHz
TDP
245 W
BUS WIDTH
384 bit
ARCHITECTURE
Kepler
PROCESS
28 nm
LAUNCH DATE
2013
PERFORMANCE BENCHMARKS
geekbench_metal
geekbench_opencl
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
GTX 680
Tesla K40c
Core Specs
Shading Units
1,536
2,880
+87.5%
Shaders
1,536
2,880
+87.5%
TMUs
128
240
+87.5%
ROPs
32
48
+50.0%
Clocks
Base Clock
1006 MHz
745 MHz
Boost Clock
1058 MHz
876 MHz
Memory Clock
1502 MHz
6 Gbps effective
1502 MHz
6 Gbps effective
Memory
Memory Size
2 GB
12 GB
VRAM (MB)
2,048
12,288
+500.0%
Memory Type
GDDR5
GDDR5
Memory Bus
256 bit
384 bit
Bandwidth
192.3 GB/s
288.4 GB/s
Cache
L1 Cache
16 KB (per SMX)
16 KB (per SMX)
L2 Cache
512 KB
1536 KB
Performance
Pixel Rate
33.86 GPixel/s
52.56 GPixel/s
Texture Rate
135.4 GTexel/s
210.2 GTexel/s
FP32 (TFLOPS)
3.250 TFLOPS
5.046 TFLOPS
FP64 (TFLOPS)
135.4 GFLOPS (1:24)
1.682 TFLOPS (1:3)
Power
TDP
195 W
245 W
TDP (W)
195
245
+25.6%
Suggested PSU
450 W
550 W
Power Connectors
2x 6-pin
1x 6-pin + 1x 8-pin
Architecture
Architecture
Kepler
Kepler
GPU Name
GK104
GK180
Generation
GeForce 600
Tesla Kepler
(Kxx)
Process Size
28 nm
28 nm
Transistors
3,540 million
7,080 million
Die Size
294 mm²
561 mm²
Foundry
TSMC
TSMC
Density
12.0M / mm²
12.6M / mm²
API Support
DirectX
12 (11_0)
12 (11_0)
OpenGL
4.6
4.6
Vulkan
1.2.175
1.2.175
OpenCL
3.0
3.0
CUDA
3.0
3.5
Shader Model
6.5 (5.1)
5.1
Physical
Slot Width
Dual-slot
Dual-slot
Length
256 mm
10.1 inches
267 mm
10.5 inches
Height
111 mm
4.4 inches
—
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
No outputs
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Other
Launch Price
499 USD
7,699 USD
Production
End-of-life
End-of-life
Predecessor
GeForce 500
Tesla Fermi
Successor
GeForce 700
Tesla Maxwell