HPE ProLiant BL660c Gen8 Processors

Genuine HPE processor option kits for the HPE ProLiant BL660c Gen8, new and refurbished. This is the four-socket blade of the Gen8 line: it takes two or four Intel Xeon E5-4600 series processors, one and three processor configurations are not supported, and every kit listed here contains two processors rather than one.

BL660c Gen8 Processor Specifications

• Sockets: four, on the Intel C600 chipset; the blade is documented for the Intel Xeon E5-4600 and E5-4600 v2 families, and the kits stocked here are E5-4600 series
• Kit contents: every kit contains two processors complete with heatsinks and fans, so a four-processor blade is two kits and a two-processor blade is one
• Eight-core kits stocked: E5-4650 at 2.7GHz and 130W, E5-4650L at 2.6GHz and 115W, E5-4640 at 2.4GHz and 95W, each with 20MB of L3 cache, and the E5-4620 at 2.2GHz and 95W with 16MB
• Six-core kits stocked: E5-4617 at 2.9GHz and 130W with 15MB of cache, E5-4610 at 2.4GHz and 95W with 15MB, and E5-4607 at 2.2GHz and 95W with 12MB
• Four-core kit stocked: E5-4603 at 2.0GHz and 95W, with 10MB of L3 cache
• Features: Intel Hyper-Threading on every processor except the E5-4617; an L after the model number denotes the lower wattage part
• Memory link: eight DIMM slots come alive with each processor fitted, so a two-processor blade reaches sixteen of the thirty-two

Two or four processors — never one, never three. Every kit for this blade contains two processors, so a four-socket build is two kits of the same part and all of them must be identical. Each processor also brings eight DIMM slots with it, which is why filling the blade is as much a memory decision as a core-count one.

How Many Cores, and at What Memory Speed?

Four sockets change the arithmetic on every one of these parts: a fully populated blade of E5-4650s is 32 cores, and even the four-core E5-4603 reaches sixteen. The processor also governs the memory clock, so the cheapest kit in the range quietly pins a terabyte of DDR3 at 1066MHz. HPE's own speed table lists the E5-4617 and the E5-4607 in two different rows; where a part appears twice, plan on the lower of the two figures.

Choosing the Right BL660c Gen8 Processor

• All processors in the blade must be identical. HPE does not support mixing models, so a four-processor build is two kits of the same part number.
• Count in pairs, never in ones. One and three processor configurations are not supported, and the kits are sold as two processors, so an upgrade step on this blade is always two sockets wide.
• A second pair unlocks the other sixteen DIMM slots. Slots attached to an empty socket are unavailable, which is often the real reason to fill the blade rather than the core count.
• Hyper-Threading is not universal. The E5-4617 carries none, which matters more than its 2.9GHz clock on a virtualised host.
• Know which kit you are buying. HPE built four-processor blades from one factory-install -L21 kit plus one -B21 kit; the kits listed here are the -B21 parts.

Complete Your BL660c Gen8 Build

Processor choice sets the memory clock and decides how many DIMM slots exist at all — see BL660c Gen8 memory alongside this page. Also available: BL660c Gen8 drives, storage controllers and networking adapters, or the full BL660c Gen8 parts listing. The half-height blade of this generation runs the two-socket E5-2600 family instead: BL460c Gen8 processors. The four-socket rack server on the same E5-4600 family is the HPE ProLiant DL560 Gen8, and every model is indexed under HPE parts by server model.

BL660c Gen8 Processors FAQ

Which processors does the BL660c Gen8 support?
Intel Xeon E5-4600 and E5-4600 v2 series, two or four of them. The kits listed here are E5-4600 series, running from the eight-core E5-4650 at 130W down to the four-core E5-4603.

Can a BL660c Gen8 run on one processor?
No. HPE supports two or four processors in this blade; one and three processor configurations are not supported.

How many processors come in a kit?
Two. Every processor kit listed for this blade contains two processors complete with heatsinks and fans, so filling all four sockets means two kits of the same part.

Can I mix different processors in a BL660c Gen8?
No. HPE states that all processors within the server must be identical, so every socket carries the same part number.

Does adding processors do anything besides add cores?
Yes. Each processor brings its own eight DIMM slots with it, so a two-processor blade can use sixteen of the thirty-two slots and a four-processor blade all of them.

Which processors support Hyper-Threading?
All of the E5-4600 series kits listed here except the E5-4617. The letter L after a model number marks the lower wattage part, such as the 115W E5-4650L.

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