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.

CPU Price
(Feb 19)
Speed
& Ratio
L2 Cache FSB TDP Node Codename
& Socket
Stepping
(sSpec)
  • Core 2 Extreme QX9770
$340 3.20 GHz
8.0x
2 x 6 MB 1600 136 W 45nm
  • 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 W 45nm
  • 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 W 65nm
  • Kentsfield XE
  • LGA 775
G0 (SLAFN)
View Sellers
  • Core 2 Quad Q9650
$69 3.00 GHz
9.0x
2 x 6 MB 1333 95 W 45nm
  • Yorkfield
  • LGA 775
E0 (SLB8W)
View Sellers
  • Xeon X3370
$69 3.00 GHz
9.0x
2 x 6 MB 1333 95 W 45nm
  • Yorkfield
  • LGA 775
E0 (SLB8Z)
View Sellers
  • Core 2 Extreme QX6800
$70 2.93 GHz
11.0x
2 x 4 MB 1066 130 W 65nm
  • Kentsfield XE
  • LGA 775
G0 (SLACP)
B3 (SL9UK)
View Sellers
  • Core 2 Extreme QX9650
$95 3.00 GHz
9.0x
2 x 6 MB 1333 130 W 45nm
  • Yorkfield XE
  • LGA 775
C1 (SLAWN)
C0 (SLAN3)
View Sellers
2.83 GHz
  • Core 2 Quad Q9505
$25 2.83 GHz
8.5x
2 x 3 MB 1333 95 W 45nm
  • Yorkfield-6M
  • LGA 775
R0 (SLGYY)
View Sellers
  • Core 2 Quad Q9500
$29 2.83 GHz
8.5x
2 x 3 MB 1333 95 W 45nm
  • Yorkfield-6M
  • LGA 775
R0 (SLGZ4)
View Sellers
  • Core 2 Quad Q9550
$32 2.83 GHz
8.5x
2 x 6 MB 1333 95 W 45nm
  • Yorkfield
  • LGA 775
E0 (SLB8V)
C1 (SLAWQ)
C0 (SLAN4)
View Sellers
  • Xeon X3360
$33 2.83 GHz
8.5x
2 x 6 MB 1333 95 W 45nm
  • Yorkfield
  • LGA 775
E0 (SLB8X)
C1 (SLAWZ)
C0 (SLAN5)
View Sellers
  • Core 2 Quad Q9505S
$52 2.83 GHz
8.5x
2 x 3 MB 1333 65 W 45nm
  • Yorkfield-6M
  • LGA 775
R0 (SLGYZ)
View Sellers
  • Core 2 Quad Q9550S
$90 2.83 GHz
8.5x
2 x 6 MB 1333 65 W 45nm
  • Yorkfield
  • LGA 775
E0 (SLGAE)
View Sellers
  • Xeon L3360
Sold out 2.83 GHz
8.5x
2 x 6 MB 1333 65 W 45nm
  • Yorkfield
  • LGA 775
E0 (SLGPF)
View Sellers
CPU Price
(Feb 19)
Speed
& Ratio
L2 Cache FSB TDP Node Codename
& Socket
Stepping
(sSpec)
2.67 GHz
  • Xeon X3330
$15 2.67 GHz
8.0x
2 x 3 MB 1333 95 W 45nm
  • Yorkfield-6M
  • LGA 775
R0 (SLB6C)
View Sellers
  • Core 2 Quad Q8400
$15 2.67 GHz
8.0x
2 x 2 MB 1333 95 W 45nm
  • Yorkfield-6M
  • LGA 775
R0 (SLGT6)
View Sellers
  • Core 2 Quad Q9400
$17 2.67 GHz
8.0x
2 x 3 MB 1333 95 W 45nm
  • Yorkfield-6M
  • LGA 775
R0 (SLB6B)
View Sellers
  • Xeon X3230
$20 2.67 GHz
10.0x
2 x 4 MB 1066 95 W 65nm
  • Kentsfield
  • LGA 775
G0 (SLACS)
View Sellers
  • Xeon X3350
$22 2.67 GHz
8.0x
2 x 6 MB 1333 95 W 45nm
  • Yorkfield
  • LGA 775
E0 (SLB8Y)
C1 (SLAX2)
C0 (SLAN7)
View Sellers
  • Core 2 Quad Q6700
$24 2.67 GHz
10.0x
2 x 4 MB 1066 95 W 65nm
  • Kentsfield
  • LGA 775
G0 (SLACQ)
View Sellers
  • Core 2 Quad Q9450
$24 2.67 GHz
8.0x
2 x 6 MB 1333 95 W 45nm
  • Yorkfield
  • LGA 775
C1 (SLAWR)
C0 (SLAN6)
View Sellers
  • Core 2 Extreme QX6700
$27 2.67 GHz
10.0x
2 x 4 MB 1066 130 W 65nm
  • Kentsfield XE
  • LGA 775
B3 (SL9UL)
View Sellers
  • Core 2 Quad Q8400S
$32 2.67 GHz
8.0x
2 x 2 MB 1333 65 W 45nm
  • Yorkfield-6M
  • LGA 775
R0 (SLGT7)
View Sellers
  • Core 2 Quad Q9400S
$55 2.67 GHz
8.0x
2 x 3 MB 1333 65 W 45nm
  • 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 W 45nm
  • Yorkfield
  • LGA 775
C1 (SLAWY)
View Sellers
CPU Price
(Feb 19)
Speed
& Ratio
L2 Cache FSB TDP Node Codename
& Socket
Stepping
(sSpec)
2.50 GHz
  • Core 2 Quad Q8300
$13 2.50 GHz
7.5x
2 x 2 MB 1333 95 W 45nm
  • Yorkfield-6M
  • LGA 775
R0 (SLGUR)
R0 (SLB5W)
Note: SLB5W does not support Intel VT-X
View Sellers
  • Xeon X3320
$13 2.50 GHz
7.5x
2 x 3 MB 1333 95 W 45nm
  • Yorkfield-6M
  • LGA 775
R0 (SLB69)
M1 (SLAWF)
View Sellers
  • Core 2 Quad Q9300
$15 2.50 GHz
7.5x
2 x 3 MB 1333 95 W 45nm
  • Yorkfield-6M
  • LGA 775
M1 (SLAWE)
M0 (SLAMX)
View Sellers
~ 2.40 GHz
  • Core 2 Quad Q6600
$12 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 Q8200
$12 2.33 GHz
7.0x
2 x 2 MB 1333 95 W 45nm
  • 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 W 65nm
  • Kentsfield
  • LGA 775
G0 (SLACT)
B3 (SL9UP)
View Sellers
  • Core 2 Quad Q8200S
$15 2.33 GHz
7.0x
2 x 2 MB 1333 65 W 45nm
  • 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 W 65nm
  • 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 W 65nm
  • 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 XE Yorkfield Yorkfield-6M Kentsfield XE Kentsfield
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
Node 45nm 45nm 45nm 65nm 65nm
Microarchitecture Penryn Penryn Penryn Core Core
Cores 4 4 4 4 4
L2 Cache 2 × 6 MB 2 × 6 MB
  • Q8xxx:
    2 × 2 MB
  •  
  • All others:
    2 × 3 MB
2 × 4 MB 2 × 4 MB
Unlocked ratio (multiplier) Supported Not supported Not supported Supported Not supported
SSE4.1 Supported Supported Supported Not supported Not supported
Virtualization Technology (VT-x) Supported Supported Supported All (except Q8200)[a] Supported Supported
Virtualization Technology for Directed I/O (VT-d) Not supported Supported All (except Xeons) Supported All (except Q9500, Q8xxx, Xeons) Not supported Not supported
Enhanced Intel SpeedStep Technology (EIST) Supported Supported Supported Supported Supported
Trusted Execution Technology (TXT) Not supported Supported All (except Xeons) Supported All (except Q9500, Q8xxx, Xeons) Not supported Not supported
Steppings C1, C0 E0, C1, C0 R0, M1, M0 G0, B3 G0, B3
Die size 2 × 107 mm2 2 × 107 mm2 2 × 82 mm2 2 × 143 mm2 2 × 143 mm2
Voltage 0.85–1.36 V 0.85–1.36 V 0.85–1.36 V 1.1–1.37 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.

Stepping Node Released L2 Cache CPUs CPUID
E0 45nm August 2008 2 x 6 MB Yorkfield 1067A
C1 45nm March 2008 2 x 6 MB
  • Yorkfield
  • Yorkfield XE
10677
C0 45nm November 2007 2 x 6 MB
  • Yorkfield
  • Yorkfield XE
10676
R0 45nm August 2008
  • 2 x 3 MB
  • 2 x 2 MB
Yorkfield-6M 1067A
M1 45nm March 2008
  • 2 x 3 MB
  • 2 x 2 MB
Yorkfield-6M 10677
M0 45nm March 2008 2 x 3 MB Yorkfield-6M 10676
G0 65nm April 2007 2 x 4 MB
  • Kentsfield XE
  • Kentsfield
06FB
B3 65nm November 2006 2 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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