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Penryn (microarchitecture)

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General information
LaunchedNovember 2007; 16 years ago (November 2007)
Max. CPU clock rate1.06 GHz to 3.33 GHz
FSB speeds533 MT/s to 1600 MT/s
L1 cache64 KB per core
L2 cache1 MB to 12 MB unified
L3 cache8 MB to 16 MB shared (Xeon)
Architecture and classification
Instruction setx86-16, IA-32, x86-64
Physical specifications
  • 1-4 (2-6 Xeon)
Products, models, variants
  • P6 Family (Celeron, Pentium, Pentium Dual-Core, Core 2 range, Xeon)
Support status

In Intel's Tick-Tock cycle, the 2007/2008 "Tick" was the shrink of the Core microarchitecture to 45 nanometers as CPUID model 23. In Core 2 processors, it is used with the code names Penryn (Socket P), Wolfdale (LGA 775) and Yorkfield (MCM, LGA 775), some of which are also sold as Celeron, Pentium and Xeon processors. In the Xeon brand, the Wolfdale-DP and Harpertown code names are used for LGA 771 based MCMs with two or four active Wolfdale cores.

Architectural improvements over 65-nanometer Core 2 CPUs include a new divider with reduced latency, a new shuffle engine, and SSE4.1 instructions (some of which are enabled by the new single-cycle shuffle engine).[1]

Maximum L2 cache size per chip was increased from 4 to 6 MB, with L2 associativity increased from 16-way to 24-way. Cut-down versions with 3 MB L2 also exist, which are commonly called Penryn-3M and Wolfdale-3M as well as Yorkfield-6M, respectively. The single-core version of Penryn, listed as Penryn-L here, is not a separate model like Merom-L but a version of the Penryn-3M model with only one active core.

CPU List[edit]

Processor Brand name Model (list) Cores L2 Cache Socket TDP
Penryn-L Core 2 Solo SU3xxx 1 MB BGA956 5.5 W
Penryn-3M Core 2 Duo SU7xxx 2 3 MB BGA956 10 W
Penryn SL9xxx 6 MB 17 W
SP9xxx 25/28 W
Penryn-3M P7xxx 3 MB Socket P
25 W
Penryn P9xxx 6 MB
Penryn-3M T6xxx 2 MB 35 W
T8xxx 3 MB
Penryn T9xxx 6 MB
E8x35 6 MB Socket P 35-55 W
Penryn-QC Core 2 Quad Q9xxx 4 2x3-2x6 MB Socket P 45 W
Penryn XE Core 2 Extreme X9xxx 2 6 MB Socket P 44 W
Penryn-QC QX9xxx 4 2x6 MB 45 W
Penryn-3M Celeron T3xxx 2 1 MB Socket P 35 W
SU2xxx μFC-BGA 956 10 W
Penryn-L 9x0 1 1 MB Socket P 35 W
7x3 μFC-BGA 956 10 W
Penryn-3M Pentium T4xxx 2 1 MB Socket P 35 W
SU4xxx 2 MB μFC-BGA 956 10 W
Penryn-L SU2xxx 1 5.5 W
Celeron E3xxx 2 1 MB LGA 775 65 W
Pentium E2210
E5xxx 2 MB
Core 2 Duo E7xxx 3 MB
Wolfdale E8xxx 6 MB
Xeon 31x0 45-65 W
Wolfdale-CL 30x4 1 LGA 771 30 W
31x3 2 65 W
Yorkfield Xeon X33x0 4 2×3–2×6 MB LGA 775 65–95 W
Yorkfield-CL X33x3 LGA 771 80 W
Yorkfield-6M Core 2 Quad Q8xxx 2×2 MB LGA 775 65–95 W
Q9x0x 2×3 MB
Yorkfield Q9x5x 2×6 MB
Yorkfield XE Core 2 Extreme QX9xxx 2×6 MB 130–136 W
QX9xx5 LGA 771 150 W
Wolfdale-DP Xeon E52xx 2 6 MB LGA 771 65 W
L52xx 20-55 W
X52xx 80 W
Harpertown E54xx 4 2×6 MB LGA 771 80 W
L54xx 40-50 W
X54xx 120-150 W

Processor cores[edit]

The processors of the Core microarchitecture can be categorized by number of cores, cache size, and socket; each combination of these has a unique code name and product code that is used across a number of brands. For instance, code name "Allendale" with product code 80557 has two cores, 2 MB L2 cache and uses the desktop socket 775, but has been marketed as Celeron, Pentium, Core 2 and Xeon, each with different sets of features enabled. Most of the mobile and desktop processors come in two variants that differ in the size of the L2 cache, but the specific amount of L2 cache in a product can also be reduced by disabling parts at production time. Wolfdale-DP and all quad-core processors except Dunnington QC are multi-chip modules combining two dies. For the 65 nm processors, the same product code can be shared by processors with different dies, but the specific information about which one is used can be derived from the stepping.

fab cores Mobile Desktop, UP Server CL Server DP Server MP Server
Single-Core 45 nm 45 nm 1 Penryn-L
Dual-Core 45 nm 45 nm 2 Penryn-3M
Quad-Core 45 nm 45 nm 4 Penryn-QC
Dunnington QC
Six-Core 45 nm 45 nm 6 Dunnington

Steppings using 45 nm process[edit]

Mobile (Penryn) Desktop (Wolfdale) Desktop (Yorkfield) Server (Wolfdale-DP, Harpertown, Dunnington)
Stepping Released Area CPUID L2 cache Max. clock Celeron Pentium Core 2 Celeron Pentium Core 2 Xeon Core 2 Xeon Xeon
C0 Nov 2007 107 mm2 10676 6 MB 3.00 GHz E8000 P7000 T8000 T9000 P9000 SP9000 SL9000 X9000 E8000 3100 QX9000 5200 5400
M0 Mar 2008 82 mm2 10676 3 MB 2.40 GHz 7xx SU3000 P7000 P8000 T8000 SU9000 E5000 E2000 E7000
C1 Mar 2008 107 mm2 10677 6 MB 3.20 GHz Q9000 QX9000 3300
M1 Mar 2008 82 mm2 10677 3 MB 2.50 GHz Q8000 Q9000 3300
E0 Aug 2008 107 mm2 1067A 6 MB 3.33 GHz T9000 P9000 SP9000 SL9000 Q9000 QX9000 E8000 3100 Q9000 Q9000S QX9000 3300 5200 5400
R0 Aug 2008 82 mm2 1067A 3 MB 2.93 GHz 7xx 900 SU2000 T3000 T4000 SU2000 SU4000 SU3000 T6000 SU7000 P8000 SU9000 E3000 E5000 E6000 E7000 Q8000 Q8000S Q9000 Q9000S 3300
A1 Sep 2008 503 mm2 106D1 3 MB 2.67 GHz 7400

In the model 23 (cpuid 01067xh), Intel started marketing stepping with full (6 MB) and reduced (3 MB) L2 cache at the same time, and giving them identical cpuid values. All steppings have the new SSE4.1 instructions. Stepping C1/M1 was a bug fix version of C0/M0 specifically for quad core processors and only used in those. Stepping E0/R0 adds two new instructions (XSAVE/XRSTOR) and replaces all earlier steppings.

In mobile processors, stepping C0/M0 is only used in the Intel Mobile 965 Express (Santa Rosa refresh) platform, whereas stepping E0/R0 supports the later Intel Mobile 4 Express (Montevina) platform.

Model 29 stepping A1 (cpuid 106d1h) adds an L3 cache as well as six instead of the usual two cores, which leads to an unusually large die size of 503 mm2.[2] As of February 2008, it has only found its way into the very high-end Xeon 7400 series (Dunnington).


See also[edit]


  1. ^ "Intel Core 2 Extreme QX9650 - Penryn Ticks Ahead".
  2. ^ "ARK entry for Intel Xeon Processor X7460". Intel. Retrieved 14 July 2009.