Product guide
Superior performance/U in a 4-socket, 2U server
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4
• 115W maximum (80W average) 8-core AMD Opteron 6128, 6134 or 6136 operating at 2.0,
2.3, or 2.4GHz (respectively), with low power draw per core (14.4W), 6.4 GTps, 1333MHz
memory access, quad integrated memory controllers, and 12MB of L3 processor cache
(1.5MB per core)
• 79W maximum (65W average) 8-core AMD Opteron 6124HE* or 6128HE operating at 1.8 or
2.0GHz (respectively), with extremely low power draw per core (9.9W), 6.4 GTps, 1333MHz
memory access, quad integrated memory controllers, and 12MB of L3 processor cache
(1.5MB per core)—available via CTO only
* Available via configure-to-order only.
System power-efficiency is crucial for businesses looking to increase their computing strength
to spread the workload without outgrowing their current data center. With the power-efficient AMD
Opteron dual-core processors, increased performance-per-watt improves compute capacity
within the same infrastructure space. By replacing old Opteron processor-based servers with new
x3755 M3 servers using the new power-efficient processors, you can reduce the number of
servers needed by up to 54%, with equivalent performance and as much as a 427% power
reduction. Or, you can nearly double the performance in the same space while still saving on
power, when implementing a one-to-one server replacement.
HyperTransport technology is a high-speed, low-latency, point-to-point link, designed to
increase the communication speed between circuits. It permits the fastest possible access to
CPU and memory. The x3755 M3 incorporates the latest version of HyperTransport technology,
which provides coherent bandwidth (among processors) of up to 3.2GBps and noncoherent
bandwidth (between processors and I/O) of up to 2.6GBps. Go to http://amd.com for more
information on HyperTransport technology.
AMD PowerNow! technology with optimized power management dynamically reduces processor
power draw based on workload. This can result in a power savings of up to 55% per processor at
CPU idle.
DDR3 ECC Memory with Chipkill Protection
x3755 M3 servers use registered double data rate III (DDR3) DIMMs and provide Active Memory
features, including advanced Chipkill memory protection, for up to 16X better error correction
than standard ECC memory, and optional online memory sparing. In addition to offering triple
the memory bandwidth of registered DDR2 or fully-buffered memory, DDR3 memory also uses
less energy. DDR2 memory already offered up to 37% lower energy use than fully buffered
memory. Now, a generation later, DDR3 memory is even more efficient, using 10-15% less
energy than DDR2 memory.
The x3755 M3 supports up to 32 RDIMMs (512GB using RDIMMs; 128GB using UDIMMs), with
8 DIMM slots assigned to each processor (four memory channels with two DIMM slots and one
memory controller per channel). Therefore a 2-processor system is limited to 16 DIMMs. Four
processors are required to use all 32 DIMM slots. Memory types supported include single-, dual-,
and quad-rank, 1.5V and energy-efficient 1.35V DIMMs. 1.35V DIMMs consume up to 18% less
energy than 1.5V DIMMs.
Notes: Memory is available in 2GB, 4GB, 8GB, or 16GB RDIMMs, or 2GB or 4GB UDIMMs.
The x3755 M3 supports single- and dual-rank UDIMMs, or single-, dual-, and quad-rank
RDIMMs. Mixing UDIMMs and RDIMMs in the same server is not supported. It is highly
recommended that memory be installed in pairs, for load-balancing purposes. The DIMMs within
a pair must be identical (capacity, rank, and speed). Chipkill protection is offered with either x4 or
x8 DIMMs.
The x3755 M3 supports up to two DIMMs per channel (2DPC) running at 1333MHz, depending
on the configuration. Memory configurations include:
• 2DPC — Single- and dual-rank 1.5V and 1.35V at 1333MHz
• 2DPC — 2 quad-rank, or 1 quad-rank and 1 single- or dual-rank 1.5V at
1066MHz; 1.35V at 800MHz
• 1DPC — Single- and dual-rank 1.5V and 1.35V at 1333MHz
• 1DPC — Quad-rank 1.5V at 1333MHz; 1.35V at 1066MHz
With online sparing enabled one rank of each pair is configured as a spare. These spare ranks
are used in the event of a DIMM failure. (All ranks must be the same size.) Using online sparing,
only 1/2 of the memory is available for use with two single-rank DIMMs in a memory channel; with
one single-rank DIMM and one dual-rank DIMM, only 2/3 of the memory is available (for example,
a 4GB single-rank DIMM and an 8GB dual-rank DIMM). 3/4 of the memory is available with two
dual-rank DIMMs. (Online sparing is not available with quad-rank DIMMs.)
High
-
Performance
Adapter Slots
The
x3755 M3
provides
four
high
-
speed
PCI Express
(PCIe)
Gen 2
adapter s
lots to fit a variety