Intel Core 2 Quad, Extreme, & Xeon CPUs (LGA 775) + Current Prices

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In this article, we'll compare the current prices and specifications for all of Intel's quad core LGA 775 processors.

  • Intel Core 2 Quad
  • Intel Core 2 Extreme
  • LGA 775 Xeons

List of Quad Core LGA 775 CPUs

Prices are automatically updated throughout the day.

CPUPrice
(Dec 9)
Speed
& Ratio
L2 CacheFSBTDPNodeCodename
& Socket
Stepping
(sSpec)
  • 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
  • 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
2.83 GHz
  • 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
  • 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
  • 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 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
  • 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
  • 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
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
  • 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

Key features and differences between CPUs

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.

 Yorkfield XEYorkfieldYorkfield-6MKentsfield XEKentsfield
CPUs
(where x = any digit)
Core 2 Extreme QX9xxx
  • Core 2 Quad Q9x50
  •  
  • Xeon X33x0, L33x0
  • Core 2 Quad Q9x0x, Q8xxx
  •  
  • Xeon X3330, X3320
Core 2 Extreme QX6xxx
  • Core 2 Quad Q6xxx
  •  
  • Xeon X32xx
Node45nm45nm45nm65nm65nm
MicroarchitecturePenrynPenrynPenrynCoreCore
Cores44444
L2 Cache2 × 6 MB2 × 6 MB
  • Q8xxx:
    2 × 2 MB
  •  
  • All others:
    2 × 3 MB
2 × 4 MB2 × 4 MB
Unlocked ratio (multiplier)SupportedNot supportedNot supportedSupportedNot supported
SSE4.1SupportedSupportedSupportedNot supportedNot supported
Virtualization Technology (VT-x)SupportedSupported Supported All (except Q8200)[a]SupportedSupported
Virtualization Technology for Directed I/O (VT-d)Not supportedSupported All (except Xeons) Supported All (except Q9500, Q8xxx, Xeons)Not supportedNot supported
Enhanced Intel SpeedStep Technology (EIST)SupportedSupportedSupportedSupportedSupported
Trusted Execution Technology (TXT)Not supportedSupported All (except Xeons) Supported All (except Q9500, Q8xxx, Xeons)Not supportedNot supported
SteppingsC1, C0E0, C1, C0R0, M1, M0G0, B3G0, B3
Die size2 × 107 mm22 × 107 mm22 × 82 mm22 × 143 mm22 × 143 mm2
Voltage0.85–1.36 V0.85–1.36 V0.85–1.36 V1.1–1.37 V
  • Core 2 Quad:
  • 1.1–1.37 V
  •  
  • Xeon:
  • 0.85–1.5 V
  • a Note: Some revisions of the Q8200S and Q8300 also do not support VT-x (see notes in the CPU table).

CPU Stepping (Revision) & 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 MBYorkfield1067A
C145nmMarch 20082 x 6 MB
  • Yorkfield
  • Yorkfield XE
10677
C045nmNovember 20072 x 6 MB
  • Yorkfield
  • Yorkfield XE
10676
R045nmAugust 2008
  • 2 x 3 MB
  • 2 x 2 MB
Yorkfield-6M1067A
M145nmMarch 2008
  • 2 x 3 MB
  • 2 x 2 MB
Yorkfield-6M10677
M045nmMarch 20082 x 3 MBYorkfield-6M10676
G065nmApril 20072 x 4 MB
  • Kentsfield XE
  • Kentsfield
06FB
B365nmNovember 20062 x 4 MB
  • Kentsfield XE
  • Kentsfield
06F7

One Response

  • Rick May 15, 20157:34 pm

    Hi, I have a Dell Optiplex 745 with a RF705 motherboard. I just upgraded to a Q6700 CPU. I was wondering if it is worth upgrading to a Q9650 or a Xeon 3xxx. Is it possible to upgrade with or without an adapter. Any help would be appreciated, and thanks for the interesting article.

    Reply

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