Dell External OEM Ready T420 Technical Manual
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Model
Speed
TDP
Cache
Cores/
threads
QPI
Max
memory
speed
Turbo
E5-2450
2.1GHz
95W
20MB
8/16
8.0 GT/s
1600MT/s
Yes
E5-2440
2.4GHz
95W
15MB
6/12
7.2 GT/s
1333MT/s
Yes
E5-2430L
2.0GHz
60W
15MB
6/12
7.2 GT/s
1333MT/s
Yes
E5-2430
2.2GHz
95W
15MB
6/12
7.2 GT/s
1333MT/s
Yes
E5-2420
1.9GHz
95W
15MB
6/12
7.2 GT/s
1333MT/s
Yes
E5-2407
2.2GHz
80W
10MB
4/8
6.4 GT/s
1066MT/s
NA
E5-2403
1.8GHz
80W
10MB
4/8
6.4 GT/s
1066MT/s
NA
For information on processor installation and configuration, see the
Dell PowerEdge T420 Systems
Owner’s Manual
on Support.Dell.com/Manuals.
The T420 supports graphics processing unit (GPU) technology, providing accelerated performance
for a variety of applications such as VDI and medical imaging.
The T420 supports two nVidia
®
Q4000 full-length, single-width or one nVidia Q6000 full-length,
double-width GPU. GPU cards are available through certified factory installation (CFI) or field
upgrade only.
Each GPU supports up to 6GB of dedicated GDDR5 memory and is actively cooled. Each GPU has
one or two power connectors to meet the high demand for power delivery. The power connectors
are located on the back of the card.
The GPUs from nVidia have PCIe 2.0 that can be installed in the T420 PCIe x16 3.0 slots 3 and 5 (slot
5 requires a two-processor configuration). The interface for the next generation GPU cards will be
PCIe 3.0.
The following system configuration restrictions apply when a GPU is installed:
1100W redundant power supply is recommended
System can support only one 5.25-inch device
Some operating systems have not been validated to support GPUs. See Table 20 for more
information on operating system support of GPUs.
The Intel C600 chipset is implemented on the PowerEdge T420. For more information, visit
Intel.com.