This page has detailed specs and current prices for all of Intel's LGA 771 Xeon processors.
If you're planning on doing the LGA 771 to 775 MOD and want to compare LGA 771 and LGA 775 CPU prices, check out the following pages:
- List of LGA 771 & 775 CPUs + Current Prices
- List of Intel Core 2 Quad & Extreme CPUs (LGA 775) + Current Prices
Quad Core LGA 771 Xeon CPUs
List of Quad Core Xeons
Prices are automatically updated throughout the day.
- To narrow down the CPU table – Use the filtering options shown in the sidebar to the right of this table (if you're on a mobile device, the sidebar has probably been moved to the bottom of the page).
- If you're unsure what a term in the table header means, click on it for a brief description.
| CPU | Price (Oct 28) | Speed & Ratio | L2 Cache | FSB | TDP | Node | Codename & Socket | Stepping (sSpec) |
|---|---|---|---|---|---|---|---|---|
| $113 | 3.40 GHz 8.5x | 2 x 6 MB | 1600 | 150 W | 45nm |
| E0 (SLBBD) |
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| $65 | 3.33 GHz 10.0x | 2 x 6 MB | 1333 | 120 W | 45nm |
| E0 (SLBBF) |
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| $60 | 3.20 GHz 8.0x | 2 x 6 MB | 1600 | 120 W 150 W | 45nm |
| E0 (SLBBG) C0 (SLANZ) |
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| $115 | 3.20 GHz 8.0x | 2 x 6 MB | 1600 | 150 W | 45nm |
| C0 (SLANY) |
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| $37 | 3.17 GHz 9.5x | 2 x 6 MB | 1333 | 120 W | 45nm |
| E0 (SLBBA) C0 (SLANP) |
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| 3.00 GHz | ||||||||
| $29 | 3.00 GHz 9.0x | 2 x 6 MB | 1333 | 120 W | 45nm |
| E0 (SLBBE) C0 (SLASB) |
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| $35 | 3.00 GHz 7.5x | 2 x 6 MB | 1600 | 80 W | 45nm |
| E0 (SLBBH) C0 (SLANR) |
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| $35 | 3.00 GHz 7.5x | 2 x 6 MB | 1600 | 120 W | 45nm |
| E0 (SLBBB) C0 (SLASA) |
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| $38 | 3.00 GHz 9.0x | 2 x 6 MB | 1333 | 80 W | 45nm |
| E0 (SLBBM) C0 (SLANQ) |
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| $60 | 3.00 GHz 9.0x | 2 x 4 MB | 1333 | 150 W | 65nm |
| G0 (SLAED) B3 (SLAC3) |
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| ~ 2.83 GHz | ||||||||
| $24 | 2.83 GHz 8.5x | 2 x 6 MB | 1333 | 80 W | 45nm |
| E0 (SLBBJ) C0 (SLANS) |
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| $25 | 2.80 GHz 7.0x | 2 x 6 MB | 1600 | 80 W | 45nm |
| E0 (SLBBN) C0 (SLANT) |
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| $40 | 2.83 GHz 8.5x | 2 x 6 MB | 1333 | 80 W | 45nm |
| E0 (SLBC3) C0 (SLASC) |
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| CPU | Price (Oct 28) | Speed & Ratio | L2 Cache | FSB | TDP | Node | Codename & Socket | Stepping (sSpec) |
| 2.67 GHz | ||||||||
| $19 | 2.67 GHz 8.0x | 2 x 6 MB | 1333 | 80 W | 45nm |
| E0 (SLBBK) C0 (SLANU) |
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| $21 | 2.67 GHz 8.0x | 2 x 4 MB | 1333 | 120 W | 65nm |
| G0 (SLAEG) B3 (SLAC4) B3 (SL9YM) |
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| $34 | 2.67 GHz 8.0x | 2 x 6 MB | 1333 | 50 W | 45nm |
| E0 (SLBBQ) |
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| $59 | 2.67 GHz 8.0x | 2 x 6 MB | 1333 | 80 W | 45nm |
| E0 (SLBC4) C0 (SLASD) |
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| 2.50 GHz | ||||||||
| $17 | 2.50 GHz 7.5x | 2 x 6 MB | 1333 | 80 W | 45nm |
| E0 (SLBBL) C0 (SLANV) |
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| $18 | 2.50 GHz 7.5x | 2 x 3 MB | 1333 | 80 W | 45nm |
| R0 (SLBC5) M0 (SLASE) |
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| $20 | 2.50 GHz 7.5x | 2 x 6 MB | 1333 | 50 W | 45nm |
| E0 (SLBBR) C0 (SLARP) |
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| 2.33 GHz | ||||||||
| $14 | 2.33 GHz 7.0x | 2 x 6 MB | 1333 | 80 W | 45nm |
| E0 (SLBBC) C0 (SLANW) |
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| $14 | 2.33 GHz 7.0x | 2 x 4 MB | 1333 | 80 W | 65nm |
| G0 (SLAEJ) B3 (SLAC5) B3 (SL9YL) |
| View Sellers | ||||||||
| $15 | 2.33 GHz 7.0x | 2 x 6 MB | 1333 | 50 W | 45nm |
| E0 (SLBBS) C0 (SLAP4) |
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| 2.13 GHz | ||||||||
| $52 | 2.13 GHz 8.0x | 2 x 6 MB | 1066 | 40 W | 45nm |
| E0 (SLBBT) C0 (SLAP5) |
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| CPU | Price (Oct 28) | Speed & Ratio | L2 Cache | FSB | TDP | Node | Codename & Socket | Stepping (sSpec) |
| 2.00 GHz | ||||||||
| $11 | 2.00 GHz 6.0x | 2 x 6 MB | 1333 | 80 W | 45nm |
| E0 (SLBBP) C0 (SLAP2) |
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| $15 | 2.00 GHz 6.0x | 2 x 4 MB | 1333 | 80 W | 65nm |
| G0 (SLAEK) B3 (SLAC7) B3 (SL9YK) |
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| $20 | 2.00 GHz 6.0x | 2 x 4 MB | 1333 | 50 W | 65nm |
| G0 (SLAEN) |
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| 1.87 GHz | ||||||||
| $11 | 1.87 GHz 7.0x | 2 x 4 MB | 1066 | 50 W | 65nm |
| G0 (SLAEP) B3 (SLAC9) B3 (SLA4Q) |
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| $12 | 1.87 GHz 7.0x | 2 x 4 MB | 1066 | 80 W | 65nm |
| G0 (SLAEL) B3 (SLAC8) B3 (SL9MV) |
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| 1.60 GHz | ||||||||
| $8 | 1.60 GHz 6.0x | 2 x 4 MB | 1066 | 80 W | 65nm |
| G0 (SLAEM) B3 (SLACB) B3 (SL9XR) |
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| $15 | 1.60 GHz 6.0x | 2 x 4 MB | 1066 | 50 W | 65nm |
| G0 (SLAEQ) B3 (SLACA) B3 (SL9MT) |
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| Sold out | 1.60 GHz 6.0x | 2 x 4 MB | 1066 | 40 W | 65nm |
| G0 (SLAJE) |
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Key features and differences
The CPUs shown below are grouped by codename, since most CPUs with the same codename are very similar. You can find the codename for each processor in the main CPU table.
The main things to notice are that the 65nm Clovertown CPUs use an older microcarchitecture, have less L2 cache, and do not support the SSE4.1 instruction.
| Harpertown | Yorkfield-CL | Yorkfield XE | Clovertown | |
|---|---|---|---|---|
| Processor Family | Xeon | Xeon | Core 2 Extreme | Xeon |
| CPUs (where x = any digit) |
| X33x3 | QX9775 |
|
| Node | 45nm | 45nm | 45nm | 65nm |
| Microarchitecture | Penryn | Penryn | Penryn | Core |
| L2 Cache | 2 × 6 MB |
| 2 × 6 MB | 2 × 4 MB |
| Unlocked ratio (multiplier) | ||||
| SSE4.1 | ||||
| Virtualization Technology (VT-x) | ||||
| Virtualization Technology for Directed I/O (VT-d) | ||||
| Enhanced Intel SpeedStep Technology (EIST) | ||||
| Demand Based Switching | |
| ||
| Trusted Execution Technology (TXT) | ||||
| Dual CPU Configurations | ||||
| Die Size | 2 × 107 mm2 |
| 2 × 107 mm2 | 2 × 143 mm2 |
| Voltage | 0.85–1.35 V | 0.85–1.35 V | 0.85–1.36 V |
|
- a Clovertown voltage range exceptions: Xeon L5335 is 1.00–1.50 V and L5318 is 0.90–1.25 V.
List of CPU steppings (revisions) & CPUID information
If you're unsure what a stepping is, Intel basically creates a new stepping (or revision) whenever they make a major change to a processor. This usually fixes bugs, adds new features, reduces power consumption, or improves overclocking.
| Stepping | Node | Released | L2 Cache | CPUs | CPUID |
|---|---|---|---|---|---|
| E0 | 45nm | August 2008 | 2 x 6 MB |
| 1067A |
| C0 | 45nm | November 2007 | 2 x 6 MB |
| 10676 |
| R0 | 45nm | August 2008 |
|
| 1067A |
| M0 | 45nm | March 2008 | 2 x 3 MB |
| 10676 |
| G0 | 65nm | April 2007 | 2 x 4 MB |
| 06FB |
| B3 | 65nm | November 2006 | 2 x 4 MB |
| 06F7 |
Delidded.com
The most comprehensive and useful table of LGA 771 Xeons I have seen on the net.
Well done and thank you!
No problem. Glad it’s useful.
Hi Don,
I would like to ask a trivial question. I have an ancient Gigabyte 965P DS3 rev 1.0 motherboard and this one according to its CPU support list is only good for 65nm CPUs with rated TDP of 130W and FSB of 1066MHz.
Can i get a Xeon CPU with an erstwhile higher FSB say 1333MHz? the two 65nm Clovertown Xeons with FSB of 1066MHz is at best inferior to my existing Q6600 on few counts.
Regards
Hey, Eric. That motherboard supports overclocking, so you can probably overclock the FSB to 1333 (search for a core 2 quad overclocking guide for more info on how to do this). If you don’t overclock it, it’s possible the system will run the processor by default at a 1066 FSB speed, which would reduce your CPU speed to 2.4 GHz (assuming you were using the 3.0 GHz Xeon X5365).
The way the CPU speed is calculated is FSB * CPU Ratio / 4, which equals 1066 * 9 / 4 = 2.4 GHz for that processor.
Thanks for reminding Don. As a matter of fact, yes i am overclocking the said Q6600 right not. Something which i am not too sure really. I was following you guide and you said that the Xeon shouldn’t have a TDP which exceed that of CPUs supported by the motherboard.
http://i22.photobucket.com/albums/b309/happily1986/CPUSupportList_zps68122514.png
The absolute top end CPU supported by this motherboard is the QX6800 which has a wattage/TDP of 130W.
Can i really go for X5365? I would love to get it if it were OK.
Thanks
Regards
Some prebuilt computers like Dell won’t boot if you use a CPU with a TDP higher than it officially supports. However, if you have an overclocking motherboard, it probably doesn’t have this limit. Additionally, if it supports 130 W, it will probably support 150 W. Just make sure you have a good enough heatsink and fan.