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Home » Motherboard
EVGA Classified SR-2 Motherboard
Author: Gabriel Torres 162,930 views
Type: First Look Last Updated: June 17, 2010
Page: 1 of 9
Introduction

EVGA Classified SR-2 (the “SR” on the name stands for “Super Record”) is an enormous dual socket LGA1366 motherboard based on Intel 5520 chipset with seven PCI Express x16 for you to build the fastest gaming PC in the world.

You can see this monster in Figure 1. It uses the HPTX (High Performance Technology eXtended) form factor, which measures 13.6” x 15” (34.5 x 38 cm) and therefore somewhat bigger than the Extended ATX (E-ATX) form factor normally used for server motherboards, which measure 12” x 13” (30.5 cm x 33 cm). So the main challenge you will have if you decide to go ahead and buy this beast is finding a case that can hold this product, since it won’t fit E-ATX cases. So far the only company offering a solution for this motherboard is Mountain Mods, which offers a motherboard tray compatible with the Classified SR-2 that will fit six of their cases without any modification. So you have six cases that you can use with this motherboard (you need to buy one of the cases and the motherboard tray).

According to EVGA this motherboard also fits Lian Li PC-P80 with a small modification on the standoffs. EVGA is maintaining a thread in their forums with a list of compatible cases, which will be updated as new cases become available. EVGA says this motherboard must be installed in a case with at least nine expansion slots – ten if you want to install four video cards.

EVGA Classified SR-2 motherboard
click to enlarge
Figure 1: EVGA Classified SR-2 motherboard.

This motherboard fits up to two socket LGA1366 Xeon processors. It is important to note that socket LGA1366 Core i7 CPUs won’t fit this motherboard for two reasons. First, Core i7 CPUs can’t work under SMP (Symmetrical MultiProcessing) mode, and therefore can’t be installed on dual-socket motherboards. Second, the CPU cooler assembly is different. The holes on the motherboard won’t fit CPU coolers for Core i7 processors because they have a nut inside; they only fit Xeon CPU coolers.

Therefore the Classified SR-2 is compatible only with Xeon 55xx and 56xx CPUs. Below you can see a list of CPUs you can install on this motherboard. They are all quad-core parts with Hyper-Theading technology, so the operating system recognizes eight CPUs per physical CPU, for a total of 16 CPUs when two CPUs are installed. Models from the 56xx series have 12 MB L3 memory cache, while models from the 55xx series have 8 MB. So you can go from a CPU like Xeon E5506 that costs only USD 238 a piece all the way up to Xeon X5677, which costs around USD 1,750 each.

  • Xeon X5677 - 3.46 GHz
  • Xeon X5680 - 3.33 GHz
  • Xeon X5667 - 3.06 GHz
  • Xeon X5670 - 2.93 GHz
  • Xeon X5660 - 2.80 GHz
  • Xeon X5650 - 2.80 GHz
  • Xeon E5620 - 2.40 GHz
  • Xeon X5550 - 2.66 GHz
  • Xeon E5540 - 2.53 GHz
  • Xeon L5520 - 2.26 GHz
  • Xeon E5506 - 2.13 GHz
  • Xeon L5506 - 2.13 GHz

Each CPU is fed with an EPS12V connector and a six-pin video card power connector (PEG). You also need to install one six-pin video card power connector to provide more current to the PCI Express x16 slots. Therefore you need three six-pin video card power connectors and two EPS12V power connectors just to install the motherboard, plus connectors you will need to feed your video cards. Therefore you will have to spend some time researching for a power supply that will fulfill your power needs, not only in terms of labeled power, but especially in number of available connectors. You can discover the power supply wattage you will need by using this calculator. EVGA is saying that they will launch a 1,200 W power supply also called SR-2 to match this motherboard.

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