List of LGA 771 & 775 CPUs + Current Prices

MODs

34 Comments

On this page, we've combined all of Intel's quad core LGA 771 and LGA 775 CPUs into 1 table (sorted by speed). This should make it easier to compare prices and specifications if you're considering the LGA 771 to 775 MOD.

  • Intel Core 2 Quad
  • Intel Core 2 Extreme
  • LGA 771 Xeon
  • LGA 775 Xeon

List of Quad Core LGA 771 & 775 CPUs

Prices are automatically updated throughout the day.

CPUPrice
(Dec 9)
Speed
& Ratio
L2 CacheFSBTDPNodeCodename
& Socket
Stepping
(sSpec)
  • Xeon X5492
$72 3.40 GHz
8.5x
2 x 6 MB 1600 150 W45nm
  • Harpertown
  • LGA 771
E0 (SLBBD)
View Sellers
  • Xeon X5470
$39 3.33 GHz
10.0x
2 x 6 MB 1333 120 W45nm
  • Harpertown
  • LGA 771
E0 (SLBBF)
View Sellers
~ 3.20 GHz
  • Xeon X5460
$15 3.17 GHz
9.5x
2 x 6 MB 1333 120 W45nm
  • Harpertown
  • LGA 771
E0 (SLBBA)
C0 (SLANP)
View Sellers
  • Xeon X5482
$30 3.20 GHz
8.0x
2 x 6 MB 1600 120 W
150 W
45nm
  • Harpertown
  • LGA 771
E0 (SLBBG)
C0 (SLANZ)
View Sellers
  • Core 2 Extreme QX9775
$145 3.20 GHz
8.0x
2 x 6 MB 1600 150 W45nm
  • Yorkfield XE
  • LGA 771
C0 (SLANY)
View Sellers
  • Core 2 Extreme QX9770
$210 3.20 GHz
8.0x
2 x 6 MB 1600 136 W45nm
  • Yorkfield XE
  • LGA 775
C1 (SLAWM)
C0 (SLAN2)
View Sellers
  • Xeon X3380
Sold out 3.17 GHz
9.5x
2 x 6 MB 1333 95 W45nm
  • Yorkfield
  • LGA 775
E0 (SLGPG)
View Sellers
~ 3.00 GHz
  • Xeon X5472
$14 3.00 GHz
7.5x
2 x 6 MB 1600 120 W45nm
  • Harpertown
  • LGA 771
E0 (SLBBB)
C0 (SLASA)
View Sellers
  • Xeon X5450
$14 3.00 GHz
9.0x
2 x 6 MB 1333 120 W45nm
  • Harpertown
  • LGA 771
E0 (SLBBE)
C0 (SLASB)
View Sellers
  • Xeon E5472
$16 3.00 GHz
7.5x
2 x 6 MB 1600 80 W45nm
  • Harpertown
  • LGA 771
E0 (SLBBH)
C0 (SLANR)
View Sellers
  • Xeon E5450
$17 3.00 GHz
9.0x
2 x 6 MB 1333 80 W45nm
  • Harpertown
  • LGA 771
E0 (SLBBM)
C0 (SLANQ)
View Sellers
  • Xeon X5365
$29 3.00 GHz
9.0x
2 x 4 MB 1333 150 W65nm
  • Clovertown
  • LGA 771
G0 (SLAED)
B3 (SLAC3)
View Sellers
  • Core 2 Extreme QX6850
$50 3.00 GHz
9.0x
2 x 4 MB 1333 130 W65nm
  • Kentsfield XE
  • LGA 775
G0 (SLAFN)
View Sellers
  • Core 2 Quad Q9650
$58 3.00 GHz
9.0x
2 x 6 MB 1333 95 W45nm
  • Yorkfield
  • LGA 775
E0 (SLB8W)
View Sellers
  • Core 2 Extreme QX6800
$68 2.93 GHz
11.0x
2 x 4 MB 1066 130 W65nm
  • Kentsfield XE
  • LGA 775
G0 (SLACP)
B3 (SL9UK)
View Sellers
  • Xeon X3370
$69 3.00 GHz
9.0x
2 x 6 MB 1333 95 W45nm
  • Yorkfield
  • LGA 775
E0 (SLB8Z)
View Sellers
  • Core 2 Extreme QX9650
$83 3.00 GHz
9.0x
2 x 6 MB 1333 130 W45nm
  • Yorkfield XE
  • LGA 775
C1 (SLAWN)
C0 (SLAN3)
View Sellers
CPUPrice
(Dec 9)
Speed
& Ratio
L2 CacheFSBTDPNodeCodename
& Socket
Stepping
(sSpec)
~ 2.83 GHz
  • Xeon E5462
$11 2.80 GHz
7.0x
2 x 6 MB 1600 80 W45nm
  • Harpertown
  • LGA 771
E0 (SLBBN)
C0 (SLANT)
View Sellers
  • Xeon E5440
$11 2.83 GHz
8.5x
2 x 6 MB 1333 80 W45nm
  • Harpertown
  • LGA 771
E0 (SLBBJ)
C0 (SLANS)
View Sellers
  • Core 2 Quad Q9505
$23 2.83 GHz
8.5x
2 x 3 MB 1333 95 W45nm
  • Yorkfield-6M
  • LGA 775
R0 (SLGYY)
View Sellers
  • Xeon X3363
$25 2.83 GHz
8.5x
2 x 6 MB 1333 80 W45nm
  • Yorkfield-CL
  • LGA 771
E0 (SLBC3)
C0 (SLASC)
View Sellers
  • Core 2 Quad Q9500
$27 2.83 GHz
8.5x
2 x 3 MB 1333 95 W45nm
  • Yorkfield-6M
  • LGA 775
R0 (SLGZ4)
View Sellers
  • Xeon X3360
$30 2.83 GHz
8.5x
2 x 6 MB 1333 95 W45nm
  • Yorkfield
  • LGA 775
E0 (SLB8X)
C1 (SLAWZ)
C0 (SLAN5)
View Sellers
  • Core 2 Quad Q9550
$39 2.83 GHz
8.5x
2 x 6 MB 1333 95 W45nm
  • Yorkfield
  • LGA 775
E0 (SLB8V)
C1 (SLAWQ)
C0 (SLAN4)
View Sellers
  • Xeon L3360
$50 2.83 GHz
8.5x
2 x 6 MB 1333 65 W45nm
  • Yorkfield
  • LGA 775
E0 (SLGPF)
View Sellers
  • Core 2 Quad Q9505S
$55 2.83 GHz
8.5x
2 x 3 MB 1333 65 W45nm
  • Yorkfield-6M
  • LGA 775
R0 (SLGYZ)
View Sellers
  • Core 2 Quad Q9550S
$85 2.83 GHz
8.5x
2 x 6 MB 1333 65 W45nm
  • Yorkfield
  • LGA 775
E0 (SLGAE)
View Sellers
CPUPrice
(Dec 9)
Speed
& Ratio
L2 CacheFSBTDPNodeCodename
& Socket
Stepping
(sSpec)
2.67 GHz
  • Xeon X5355
$9 2.67 GHz
8.0x
2 x 4 MB 1333 120 W65nm
  • Clovertown
  • LGA 771
G0 (SLAEG)
B3 (SLAC4)
B3 (SL9YM)
View Sellers
  • Xeon E5430
$9 2.67 GHz
8.0x
2 x 6 MB 1333 80 W45nm
  • Harpertown
  • LGA 771
E0 (SLBBK)
C0 (SLANU)
View Sellers
  • Core 2 Quad Q8400
$15 2.67 GHz
8.0x
2 x 2 MB 1333 95 W45nm
  • Yorkfield-6M
  • LGA 775
R0 (SLGT6)
View Sellers
  • Core 2 Quad Q9400
$16 2.67 GHz
8.0x
2 x 3 MB 1333 95 W45nm
  • Yorkfield-6M
  • LGA 775
R0 (SLB6B)
View Sellers
  • Xeon X3330
$17 2.67 GHz
8.0x
2 x 3 MB 1333 95 W45nm
  • Yorkfield-6M
  • LGA 775
R0 (SLB6C)
View Sellers
  • Core 2 Quad Q6700
$20 2.67 GHz
10.0x
2 x 4 MB 1066 95 W65nm
  • Kentsfield
  • LGA 775
G0 (SLACQ)
View Sellers
  • Xeon X3353
$20 2.67 GHz
8.0x
2 x 6 MB 1333 80 W45nm
  • Yorkfield-CL
  • LGA 771
E0 (SLBC4)
C0 (SLASD)
View Sellers
  • Xeon L5430
$22 2.67 GHz
8.0x
2 x 6 MB 1333 50 W45nm
  • Harpertown
  • LGA 771
E0 (SLBBQ)
View Sellers
  • Xeon X3230
$27 2.67 GHz
10.0x
2 x 4 MB 1066 95 W65nm
  • Kentsfield
  • LGA 775
G0 (SLACS)
View Sellers
  • Core 2 Quad Q9450
$27 2.67 GHz
8.0x
2 x 6 MB 1333 95 W45nm
  • Yorkfield
  • LGA 775
C1 (SLAWR)
C0 (SLAN6)
View Sellers
  • Xeon X3350
$28 2.67 GHz
8.0x
2 x 6 MB 1333 95 W45nm
  • Yorkfield
  • LGA 775
E0 (SLB8Y)
C1 (SLAX2)
C0 (SLAN7)
View Sellers
  • Core 2 Extreme QX6700
$31 2.67 GHz
10.0x
2 x 4 MB 1066 130 W65nm
  • Kentsfield XE
  • LGA 775
B3 (SL9UL)
View Sellers
  • Core 2 Quad Q8400S
$32 2.67 GHz
8.0x
2 x 2 MB 1333 65 W45nm
  • Yorkfield-6M
  • LGA 775
R0 (SLGT7)
View Sellers
  • Core 2 Quad Q9400S
$56 2.67 GHz
8.0x
2 x 3 MB 1333 65 W45nm
  • Yorkfield-6M
  • LGA 775
R0 (SLG9U)
View Sellers
  • Core 2 Quad Q9450S
Sold out 2.67 GHz
8.0x
2 x 6 MB 1333 65 W45nm
  • Yorkfield
  • LGA 775
C1 (SLAWY)
View Sellers
CPUPrice
(Dec 9)
Speed
& Ratio
L2 CacheFSBTDPNodeCodename
& Socket
Stepping
(sSpec)
2.50 GHz
  • Xeon L5420
$5 2.50 GHz
7.5x
2 x 6 MB 1333 50 W45nm
  • Harpertown
  • LGA 771
E0 (SLBBR)
C0 (SLARP)
View Sellers
  • Xeon E5420
$6 2.50 GHz
7.5x
2 x 6 MB 1333 80 W45nm
  • Harpertown
  • LGA 771
E0 (SLBBL)
C0 (SLANV)
View Sellers
  • Xeon X3323
$10 2.50 GHz
7.5x
2 x 3 MB 1333 80 W45nm
  • Yorkfield-CL
  • LGA 771
R0 (SLBC5)
M0 (SLASE)
View Sellers
  • Core 2 Quad Q8300
$12 2.50 GHz
7.5x
2 x 2 MB 1333 95 W45nm
  • Yorkfield-6M
  • LGA 775
R0 (SLGUR)
R0 (SLB5W)
Note: SLB5W does not support Intel VT-X
View Sellers
  • Core 2 Quad Q9300
$15 2.50 GHz
7.5x
2 x 3 MB 1333 95 W45nm
  • Yorkfield-6M
  • LGA 775
M1 (SLAWE)
M0 (SLAMX)
View Sellers
  • Xeon X3320
$16 2.50 GHz
7.5x
2 x 3 MB 1333 95 W45nm
  • Yorkfield-6M
  • LGA 775
R0 (SLB69)
M1 (SLAWF)
View Sellers
~ 2.40 GHz
  • Xeon E5410
$4 2.33 GHz
7.0x
2 x 6 MB 1333 80 W45nm
  • Harpertown
  • LGA 771
E0 (SLBBC)
C0 (SLANW)
View Sellers
  • Xeon E5345
$6 2.33 GHz
7.0x
2 x 4 MB 1333 80 W65nm
  • Clovertown
  • LGA 771
G0 (SLAEJ)
B3 (SLAC5)
B3 (SL9YL)
View Sellers
  • Xeon L5410
$8 2.33 GHz
7.0x
2 x 6 MB 1333 50 W45nm
  • Harpertown
  • LGA 771
E0 (SLBBS)
C0 (SLAP4)
View Sellers
  • Core 2 Quad Q8200
$12 2.33 GHz
7.0x
2 x 2 MB 1333 95 W45nm
  • Yorkfield-6M
  • LGA 775
R0 (SLG9S)
M1 (SLB5M)
Note: Does not support Intel VT-X
View Sellers
  • Xeon X3220
$13 2.40 GHz
9.0x
2 x 4 MB 1066 105 W65nm
  • Kentsfield
  • LGA 775
G0 (SLACT)
B3 (SL9UP)
View Sellers
  • Core 2 Quad Q6600
$13 2.40 GHz
9.0x
2 x 4 MB 1066 95 W
105 W
65nm
  • Kentsfield
  • LGA 775
G0 (SLACR)
B3 (SL9UM)
View Sellers
  • Core 2 Quad Q8200S
$29 2.33 GHz
7.0x
2 x 2 MB 1333 65 W45nm
  • Yorkfield-6M
  • LGA 775
R0 (SLGSS)
R0 (SLG9T)
Note: SLG9T does not support Intel VT-X
View Sellers
CPUPrice
(Dec 9)
Speed
& Ratio
L2 CacheFSBTDPNodeCodename
& Socket
Stepping
(sSpec)
2.13 GHz
  • Xeon X3210
$10 2.13 GHz
8.0x
2 x 4 MB 1066 105 W65nm
  • Kentsfield
  • LGA 775
G0 (SLACU)
B3 (SL9UQ)
View Sellers
  • Xeon L5408
$16 2.13 GHz
8.0x
2 x 6 MB 1066 40 W45nm
  • Harpertown
  • LGA 771
E0 (SLBBT)
C0 (SLAP5)
View Sellers
  • Core 2 Quad Q6400
Sold out 2.13 GHz
8.0x
2 x 4 MB 1066 105 W65nm
  • Kentsfield
  • LGA 775
B3 (SL9UN)
View Sellers
2.00 GHz
  • Xeon E5405
$3 2.00 GHz
6.0x
2 x 6 MB 1333 80 W45nm
  • Harpertown
  • LGA 771
E0 (SLBBP)
C0 (SLAP2)
View Sellers
  • Xeon E5335
$5 2.00 GHz
6.0x
2 x 4 MB 1333 80 W65nm
  • Clovertown
  • LGA 771
G0 (SLAEK)
B3 (SLAC7)
B3 (SL9YK)
View Sellers
  • Xeon L5335
$12 2.00 GHz
6.0x
2 x 4 MB 1333 50 W65nm
  • Clovertown
  • LGA 771
G0 (SLAEN)
View Sellers
1.87 GHz
  • Xeon E5320
$3 1.87 GHz
7.0x
2 x 4 MB 1066 80 W65nm
  • Clovertown
  • LGA 771
G0 (SLAEL)
B3 (SLAC8)
B3 (SL9MV)
View Sellers
  • Xeon L5320
$9 1.87 GHz
7.0x
2 x 4 MB 1066 50 W65nm
  • Clovertown
  • LGA 771
G0 (SLAEP)
B3 (SLAC9)
B3 (SLA4Q)
View Sellers
1.60 GHz
  • Xeon E5310
$3 1.60 GHz
6.0x
2 x 4 MB 1066 80 W65nm
  • Clovertown
  • LGA 771
G0 (SLAEM)
B3 (SLACB)
B3 (SL9XR)
View Sellers
  • Xeon L5310
$7 1.60 GHz
6.0x
2 x 4 MB 1066 50 W65nm
  • Clovertown
  • LGA 771
G0 (SLAEQ)
B3 (SLACA)
B3 (SL9MT)
View Sellers
  • Xeon L5318
Sold out 1.60 GHz
6.0x
2 x 4 MB 1066 40 W65nm
  • Clovertown
  • LGA 771
G0 (SLAJE)
View Sellers
CPUPrice
(Dec 9)
Speed
& Ratio
L2 CacheFSBTDPNodeCodename
& Socket
Stepping
(sSpec)

Key features and differences between Quad Core LGA 771 & 775 CPUs

Topics in this section
  1. 45nm Comparison
  2. 65nm Comparison

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.

45nm Comparison

The most important thing to notice is that the Yorkfield-6M CPUs (LGA 775) have half the cache of the others.

 HarpertownYorkfield-CLYorkfield XEYorkfieldYorkfield-6M
CPUs
(where x = any digit)
Xeon X54xx, E54xx, L54xxXeon X33x3Core 2 Extreme QX9xxx
  • Core 2 Quad Q9x50
  •  
  • Xeon X33x0, L33x0
  • Core 2 Quad Q9x0x, Q8xxx
  •  
  • Xeon X3330, X3320
SocketLGA 771LGA 771
  • LGA 771
  • LGA 775
LGA 775LGA 775
MicroarchitecturePenrynPenrynPenrynPenrynPenryn
L2 Cache2 × 6 MB
  • 2 × 6 MB
  • 2 × 3 MB
2 × 6 MB2 × 6 MB
  • Q8xxx:
    2 × 2 MB
  •  
  • All others:
    2 × 3 MB
Unlocked ratio (multiplier)Not supportedNot supportedSupportedNot supportedNot supported
SSE4.1SupportedSupportedSupportedSupportedSupported
Virtualization Technology (VT-x)SupportedSupportedSupportedSupported Supported All (except Q8200)[a]
Virtualization Technology for Directed I/O (VT-d)Not supportedNot supportedNot supportedSupported All (except Xeons) Supported All (except Q9500, Q8xxx, Xeons)
Enhanced Intel SpeedStep Technology (EIST) Supported All (except E5405)SupportedSupportedSupportedSupported
Demand Based Switching Supported All (except E5405, L5408)Not supportedNot supportedNot supportedNot supported
Trusted Execution Technology (TXT)Not supportedNot supportedNot supportedSupported All (except Xeons) Supported All (except Q9500, Q8xxx, Xeons)
Dual CPU ConfigurationsSupportedNot supported
  • Supported QX9775
  • Not supported All others
Not supportedNot supported
Die Size2 × 107 mm2
  • 2 × 107 mm2
  •  
  • X3323:
    2 × 82 mm2
2 × 107 mm22 × 107 mm22 × 82 mm2
Voltage0.85–1.35 V0.85–1.35 V0.85–1.36 V0.85–1.36 V0.85–1.36 V
  • a Note: Some revisions of the Q8200S and Q8300 also do not support VT-x (see notes in the CPU table).

65nm Comparison

 ClovertownKentsfield XEKentsfield
CPUs
(where x = any digit)
Xeon X53xx, E53xx, L53xxCore 2 Extreme QX6xxx
  • Core 2 Quad Q6xxx
  •  
  • Xeon X32xx
SocketLGA 771LGA 775LGA 775
MicroarchitectureCoreCoreCore
L2 Cache2 × 4 MB2 × 4 MB2 × 4 MB
Unlocked ratio (multiplier)Not supportedSupportedNot supported
SSE4.1Not supportedNot supportedNot supported
Virtualization Technology (VT-x)SupportedSupportedSupported
Virtualization Technology for Directed I/O (VT-d)Not supportedNot supportedNot supported
Enhanced Intel SpeedStep Technology (EIST)Supported All (except E5310 & E5335)SupportedSupported
Demand Based Switching
  • Supported X53xx, E5345, E5320, L5318
  •  
  • Not supported All others
Not supportedNot supported
Trusted Execution Technology (TXT)Not supportedNot supportedNot supported
Dual CPU ConfigurationsSupportedNot supportedNot supported
Die Size2 × 143 mm22 × 143 mm22 × 143 mm2
Voltage
  • L53xx[a]:
    1.10–1.25 V
  •  
  • All others:
    1.00–1.50 V
1.1–1.37 V
  • Core 2 Quad:
  • 1.1–1.37 V
  •  
  • Xeon:
  • 0.85–1.5 V
  • a Clovertown voltage range exceptions: Xeon L5335 is 1.00–1.50 V and L5318 is 0.90–1.25 V.

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.

SteppingNodeReleasedL2 CacheCPUsCPUID
E045nmAugust 20082 x 6 MB
  • Harpertown
  • Yorkfield-CL
  • Yorkfield
1067A
C145nmMarch 20082 x 6 MB
  • Yorkfield
  • Yorkfield XE
10677
C045nmNovember 20072 x 6 MB
  • Harpertown
  • Yorkfield-CL
  • Yorkfield
  • Yorkfield XE
10676
R045nmAugust 2008
  • ≤ 2 x 3 MB
  • Yorkfield-CL
  • Yorkfield-6M
1067A
M145nmMarch 2008
  • 2 x 3 MB
  • 2 x 2 MB
Yorkfield-6M10677
M045nmMarch 20082 x 3 MB
  • Yorkfield-CL
  • Yorkfield-6M
10676
G065nmApril 20072 x 4 MB
  • Clovertown
  • Kentsfield XE
  • Kentsfield
06FB
B365nmNovember 20062 x 4 MB
  • Clovertown
  • Kentsfield XE
  • Kentsfield
06F7

34 Responses

  • Vincent12 June 27, 20159:08 pm

    @roger
    I just can find the Asrock Wolfdale 1333-D667

    http://www.asrock.com/mb/Intel/Wolfdale1333-D667/
    “Compatible with all FSB1333*/1066/800/533 MHz CPUs except Quad Core” 771 mod sticker. if it works regardless. Cut off the notches on the socket.
    If something goes wrong with the socket pins you’ve just lost an old mainboard.
    Just do so if you have another working computer!!

    Reply
  • hello December 23, 20159:38 am

    my Mainboards: GA-X48-DQ6 take Xeon X3370 oder cpu other can?problem?
    please answer

    Reply
  • Versace December 23, 20159:40 am

    my Mainboards: GA-X48-DQ6 take Xeon X3370 oder cpu other can?problem?
    please answer

    Reply
  • Eric December 25, 20152:53 am

    I currently have an ancient Gigabyte P965 DS3 rev 1.0 with a Q6600 stepping G0 overclocked to 3.38GHz. I am wondering there is any significant performance gains if i switch to a Xeon X5355.

    The most top end CPU in my mobo compatibility list, my mobo can support a max TDP of 130W, 1066Mhz FSB on 65nm. I am assuming i am able to take in a X5355.

    Presume i could overclock the X5355 as far as it could go, does it makes sense for me to go through the hassle for the performance gain or should i just go for a new system build already?

    Reply
  • Alex June 12, 201610:09 am

    Salve a tutti,
    ho una p5ld2 su cui ho installato uno xeon E5320, nonostante abbia eseguito tutti i passi e aggiornato il microcodice, tutto funziona regolare ma vede solo 3 cpu!!!! Ho gia disassemblato e riassemblato, non riesco a capire il problema, ho posizionato lo stesso processore su una P5QPL-AM ed il problema non si presenta!!!!
    Qualche idea???

    Hello to everyone,
    I have a P5LD2 on which I installed xeon E5320, despite having performed all the steps and updated microcode, everything works fine but only 3 cpu i can see !!!! I already disassembled and reassembled, I can not understand the problem, I positioned the same processor on a P5QPL-AM and the problem does not show up !!!!
    Some idea???

    Grazie

    Reply
  • Pipes June 26, 20162:08 am

    If would tell you to spend a few bucks and do as me… i bought the Xeon 5460, and it works beautifully, overclocked it to 3.7Ghz, and cause i have a gtx 970, i can play any game very well.

    Ill send the benchmark result, for you to see check>

    http://www.userbenchmark.com/UserRun/1283628

    Reply
  • Juilan M August 19, 20161:39 pm

    Hello, is it possible to mod the Xeon SL96A 5060 3.2GHz? Or is dependent on the mobo?

    Reply
  • Alexandr December 9, 20165:52 am

    Hello, I want to install intel Xeon E5450 xeon 775 3.0 GHz 12 M 1333MHz Q9650 on the motherboard TP45D2-A7 Ver. 6.x Socket: 775. This requires the BIOS microcode? If stepping CPU through the program AIDA 64 – E0

    Reply

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