GeForce GTX 680 vs GeForce GTX 645 OEM
Summary
Reasons to consider GeForce GTX 680 |
| Higher theoretical gaming performance, based on specifications. |
| Supports PhysX |
| Supports G-Sync |
| Supports ShadowPlay (allows game streaming/recording with minimum performance penalty) |
| Based on an outdated architecture (Nvidia Kepler), there are less performance optimizations for current games and applications |
Reasons to consider GeForce GTX 645 OEM |
| 130 watts lower power draw. This might be a strong point if your current power supply is not enough to handle the GeForce GTX 680 . |
| This is a much newer product, it might have better long term support. |
| Supports PhysX |
| Supports G-Sync |
| Supports ShadowPlay (allows game streaming/recording with minimum performance penalty) |
| Based on an outdated architecture (Nvidia Kepler), there are less performance optimizations for current games and applications |
HWBench recommends GeForce GTX 680
Based on theoretical specifications.
Core Configuration
| GeForce GTX 680 | | GeForce GTX 645 OEM | |
|---|
| GPU Name | GK104 (GK104-400-A2) | vs | GK106 () |
| Fab Process | 28 nm | vs | 28 nm |
| Die Size | 294 mm² | vs | 221 mm² |
| Transistors | 3,540 million | vs | 2,540 million |
| Shaders | 1536 | vs | 576 |
| Compute Units | 8 | vs | 3 |
| Core clock | 1006 MHz | vs | 824 MHz |
| ROPs | 32 | vs | 16 |
| TMUs | 128 | vs | 48 |
Memory Configuration
| GeForce GTX 680 | | GeForce GTX 645 OEM | |
|---|
| Memory Type | GDDR5 | vs | GDDR5 |
| Bus Width | 256 bit | vs | 128 bit |
| Memory Speed | 1502 MHz
6008 MHz effective | vs | 1000 MHz
4000 MHz effective |
| Memory Size | 2048 Mb | vs | 1024 Mb |
Additional details
| GeForce GTX 680 | | GeForce GTX 645 OEM | |
|---|
| TDP | 195 watts | vs | 65 watts |
| Release Date | 22 Mar 2012 | vs | 22 Apr 2013 |
GeForce GTX 680
32.20 GP/s
GeForce GTX 645 OEM
9.89 GP/s
GigaPixels - higher is better
GeForce GTX 680
129.00 GT/s
GeForce GTX 645 OEM
39.60 GT/s
GigaTexels - higher is better
GeForce GTX 680
192.00 GB/s
GeForce GTX 645 OEM
64.00 GB/s
GB/s - higher is better
GeForce GTX 680
3090.00 GFLOPs
GeForce GTX 645 OEM
949.20 GFLOPs
GFLOPs - higher is better