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| Feature |  |
E20 | |
S20 | |
D20 |
| Processors | |
Intel® Pentium® Intel® Core™ i3 Intel® Core™ i5 Intel® Xeon |
|
Intel® Xeon | |
Intel® Xeon |
| Preloaded operating systems | |
Genuine Windows® 7 Professional 64 Lenovo Enhanced Experience | |
Genuine Windows® 7 Professional 64 | |
Genuine Windows® 7 Professional 64 |
| Chipset | |
Intel 3450 | |
Intel X58 | |
Intel 5520 |
| Supported memory types | |
1333MHz DDR3 ECC UDIMM 1333MHz DDR3 Non-ECC UDIMM |
|
1333Mhz DDR3 ECC UDIMM 1066MHz DDR3 ECC UDIMM |
|
1333MHz DDR3 ECC UDIMM 1066MHz DDR3 Non-ECC UDIMM 1333MHz DDR3 RDIMM 1066MHz DDR3 RDIMM |
| DIMM slots available | |
4 | |
6 | |
12 |
| Total memory capacity | |
16GB | |
12GB | |
192GB* |
| Other supported operating systems | |
Genuine Windows 7 Professional 32-bit Genuine Windows XP x64 Red Hat Enterprise Linux 5 |
|
Genuine Windows® XP x64 Red Hat Enterprise Linux 5 |
|
Genuine Windows® XP x64 Red Hat Enterprise Linux 5 |
| Graphics support Up to 2 NVIDIA® or 2 ATI cards are supported. Mixing ATI and NVIDIA graphics is not supported. |
|
Professional Intel® Integrated Graphics on Intel® Pentium®, Core™ i3 and Core™ i5 CPUs 1x NVIDIA Quadro |
|
2x NVIDIA Quadro 2x ATI FirePro™ |
|
2x NVIDIA Quadro 2x ATI FirePro |
| GPU computing support | |
CUDA for NVIDIA graphics cards | |
NVIDIA Tesla C1060 | |
NVIDIA Tesla C1060 |
| Hard drive support | |
7,200 rpm SATA 10,000 rpm SATA Solid-state drive MLC type |
|
7,200 rpm SATA 10,000 rpm SATA 15,000 rpm SAS with SAS adapter Solid-state drive MLC type |
|
7,200 rpm SATA 10,000 rpm SATA 15,000 rpm SAS Solid-state drive MLC type |
| RAID support | |
0, 1 | |
0, 1, 5 (SATA & SAS) | |
0, 1, 5, 10 (SATA & SAS) |
| Network support | |
Gigabit Ethernet | |
Gigabit Ethernet | |
Dual Gigabit Ethernet |
| Power supply | |
280W 80 Plus Bronze | |
625W 80 Plus Bronze | |
1,060W 80 Plus Bronze |
| IEEE 1394 support | |
Optional via card | |
Optional via card | |
Yes |
| Audio output | |
Optional | |
Yes | |
Yes |
| Acoustics Idle operating noise level w/SATA |
|
27db | |
27db | |
24db |
| Environmental certifications ENERGY STAR® and EPEAT apply to select models only |
|
ENERGY STAR EPEAT Gold GREENGUARD 80 PLUS® Bronze REACH |
|
ENERGY STAR EPEAT Gold GREENGUARD RoHS |
|
ENERGY STAR EPEAT Gold GREENGUARD RoHS 80 PLUS Bronze |
| Recycled plastic content System only |
|
65% post-consumer | |
26% post-consumer 24% post-industrial |
|
27% post-consumer 23% post-industrial |
