Dezső Sima

Evolution of Intel’s Basic Microarchitectures - 2

October 2012

Vers. 3.2

Contents

1. Introduction•

2. Core 2•

3. Penryn•

4. Nehalem•

7. Westmere-EX •

5. Nehalem-EX •

6. Westmere•

Contents

9. Sandy Bridge Extreme Edition•

10. Ivy Bridge•

11. Overview of the evolution•

8. Sandy Bridge•

11. Haswell•

8. Sandy Bridge

8.1 Introduction•

8.2 Advanced Vector Extension (AVX)•

8.3 On-die ring interconnect bus•

8.4 On-die integrated graphics unit•

8.5 Enhanced turbo boost technology•

8.1 Introduction (1)

• Sandy Bridge is Intel’s new microarchitecture using 32 nm line width.

• First delivered in 1/2011

8.1 Introduction

32K L1D (3 clk)AVX 256 bit4 Operands

256 KB L2(9 clk)

HyperthreadingAES Instr.

VMX Unrestrict.20 nm2 / Core

256 KB L2(9 clk)

256 KB L2(9 clk)

256 KB L2(9 clk)

256 KB L2(9 clk)

256 KB L2(9 clk)

256 KB L2(9 clk)

PCIe 2.0

@ 1.0 1.4 GHz(to L3 connected)

256 b/cycle Ring Architecture

(25 clk)

DDR3-1600 25.6 GB/s

Main functional units of Sandy Bridge [143] Part 4

32 nm process / ~225 nm2 die size / 85W TDP

8.1 Introduction (2)

Key features and benefits of the Sandy Bridge line vs the 1. generation Nehalem line [61]

8.1 Introduction (3)

Desktops

Servers

DP-Servers

E5 2xxx, Sandy Bridge-EP, up to 8C, Q4/2011

UP-Servers

E3 12xx, 4C, Sandy Bridge-H2, 4C, 3/2011

Mobiles

Core i3-23xxM, 2C, 2/2011 Core i5-24xxM//25xxM, 2C, 2/2011Core i7-26xxQM/27xxQM/28xxQM, 4C, 1/2011 Core i7 Extreme-29xxXM , 4C, Q1 2011

Core i3-21xx, 2C,no HT, no vPro, 2/2011Core i5-23xx 4C+G, no HT no VPro, 1/2011Core i5/24xx/25xx, 4C+G, no HT, vPro, 1/2011Core i7-26xx, 4C+G, HT, vPro, 1/2011Core i7-2700K, 4C+G, HT, no vPro, 10/2011

MP-Servers

E5 4xxx, Sandy Bridge-EX, up to 8C, Q1/2012

Overview of the Sandy Bridge based processor lines

Based on [62] and [63]

8.1 Introduction (4)

Core i7-3960X, 6C, HT, vPro??, 11/2011Core i7-3930K, 6C, HT, vPro??, 11/2011

Desktops

Sandy Bridge Sandy Bridge-ESection 9)

8.2 Advanced Vector Extension (AVX) (1)

Figure: Evolution of the SIMDprocessing width [18] BMA-ból

8.2 Advanced Vector Extension (AVX)

Sandy Bridge

Introduction of AVX

NorhwoodNorthwood (Pentium4)Northwood (Pentium4)

8 MM registers (64-bit), aliased on the FP Stack registers

8 XMM registers (128-bit)

16 XMM registers (128-bit)

16 YMM registers (256-bit)

Figure: Intel’s x86 ISA extensions - the SIMD register space (based on [18]) BMA

Ivy Bridge

8.2 Advanced Vector Extension (AVX) (2)

8.3 On-die ring interconnect bus (1)

8.4 The on die ring interconnect bus of Sandy Bridge [66]

Six bus agents.

The four cores and theL3 slices share interfaces.

8.4 On-die integrated graphics unit (1)

8.5 Sandy Bridge’s integrated graphics unit [102] Part4

12 EUs

Specification data of the HD 2000 and HD 3000 graphics [125] Part 4

-

8.4 On-die integrated graphics unit (2)

frames per sec

i5/i7 2xxx/3xxx:Sandy Bridge

i5 6xxArrandale

HD5570400 ALUs

Performance comparison: gaming [126] part 4

8.4 On-die integrated graphics unit (3)

8.5 Enhanced turbo boost technology (1)

Cooler

Innovative concept of the 2.0 generation Turbo Boost technology

Thermal capacitance

The concept utilizes the real temperature response of processors to power changes in order to increase the extent of overclocking [64]

8.5 Enhanced turbo boost technology [64]

Concept: Use thermal energy budget accumulated during idle periods to push the corebeyond the TDP for short periods of time (e.g. for 20 sec).

Multiple algorithms manage in parallel current, power and die temperature. [64]

8.5 Enhanced turbo boost technology (2)

Intelligent power sharing between the cores and the integrated graphics [64]

8.5 Enhanced turbo boost technology (3)

Intelligent power sharing between the cores and the integrated graphics [68]

8.5 Enhanced turbo boost technology (4)

[61]

WSM/M

WSM/D

NHM/M

NHM/D

8.5 Enhanced turbo boost technology (5)

Remark

8.5 Enhanced turbo boost technology (6)

• Individual cores may run at different frequencies but all cores share the same power plane.

• Individual cores may be shut down if idle by power gates.

9. The Sandy Bridge-E line

9. The Sandy Bridge-E line (1)

9 The Sandy Bridge-E line of processors (2. gen. Core i7 processors)

Introduced in 11/2011 as a “precursor” of the upcoming DP/MP server lines.

Key features vs the original Sandy Bridge line (1)

a) 6 cores with 2 cores disabled but does not incorporate graphics [76].

435 mm2 2.27 B trs15 MB L3

216 mm2 995 mtrs8 MB L2

[61][76]

9. The Sandy Bridge-E line (2)

Sandy Bridge (2x)Sandy Bridge E

CPU Specification Comparison

CPUManufacturin

gProcess

Cores

Transistor Count

Die Size

AMD Bulldozer 8C 32nm 8 ~2B 315mm2

AMD Thuban 6C 45nm 6 904M 346mm2

AMD Deneb 4C 45nm 4 758M 258mm2

Intel Gulftown 6C 32nm 6 1.17B 240mm2

Intel Sandy Bridge E (6C) 32nm 6 2.27B 435mm2

Intel Nehalem/Bloomfield 4C 45nm 4 731M 263mm2

Intel Sandy Bridge 4C 32nm 4 995M 216mm2

Intel Lynnfield 4C 45nm 4 774M 296mm2

Intel Clarkdale 2C 32nm 2 384M 81mm2

Intel Sandy Bridge 2C (GT1) 32nm 2 504M 131mm2

Intel Sandy Bridge 2C (GT2) 32nm 2 624M 149mm2

Comparison of die parameters of recent DT processors [77]

9. The Sandy Bridge-E line (3)

  L1 L2 L3Main

Memory

AMD FX-8150 (3.6GHz)

4 21 65 195

AMD Phenom II X4 975 BE (3.6GHz)

3 15 59 182

AMD Phenom II X6 1100T (3.3GHz)

3 14 55 157

Intel Core i5 2500K (3.3GHz)

4 11 25 148

Intel Core i7 3960X (3.3GHz)

4 11 30 167

Cache/memory latencies of recent DT processors [77]

9. The Sandy Bridge-E line (4)

b) 4 parallel memory channels (inherited from the server side) instead of 2 of the previous lines. Support of DDR3 of up to 1600 MT/s. A single DDR3-1600 DIMM per channel or 2 DDR3-1333 DIMMs per channel [78].

9. The Sandy Bridge-E line (5)

c) 40 PCIe 2. gen. lanes to connect graphics cards directly to the processor instead of 16 to 32 of the previous generation Sandy Bridge [78].d) LGA-2011 socket instead of the LGA-1155 used in the pervious generation Sandy Bridge due to the increased number of memory channels connected to the processor..

9. The Sandy Bridge-E line (6)

ProcessorCore Clock

Cores / Threads

L3 CacheMax

Turbo

Max Overclock Multiplier

TDP Price

Intel Core i7 3960X 3.3GHz 6 / 12 15MB 3.9GHz 57x 130W $990

Intel Core i7 3930K 3.2GHz 6 / 12 12MB 3.8GHz 57x 130W $555

Intel Core i7 3820 3.6GHz 4 / 8 10MB 3.9GHz 43x 130W TBD

Intel Core i7 2700K 3.5GHz 4 / 8 8MB 3.9GHz 57x 95W $332

Intel Core i7 2600K 3.4GHz 4 / 8 8MB 3.8GHz 57x 95W $317

Intel Core i7 2600 3.4GHz 4 / 8 8MB 3.8GHz 42x 95W $294

Intel Core i5 2500K 3.3GHz 4 / 4 6MB 3.7GHz 57x 95W $216

Intel Core i5 2500 3.3GHz 4 / 4 6MB 3.7GHz 41x 95W $205

Main features of the Sandy Bridge-E line vs the Sandy Bridge line [77]

9. The Sandy Bridge-E line (7)

Intel’s DT board for Sandy Bridge-E processors [79](The DX79SI ATX board for the Core i7-3960X /3930K)

Max. memory: 8 x 8 GB

9. The Sandy Bridge-E line (8)

10. The Ivy Bridge line

10. Te Ivy Bridge line – 10.1 Introduction (1)

Introduced: 4/2013

Figure 10.1: Intel’s Tick-Tock development model [Based on 1]

Tick-Tock Development Model

Merom1

NEWMicroarchitecture

65nm

Penryn

NEWProcess

45nm

Nehalem

NEWMicroarchitecture

45nm

Westmere

NEWProcess

32nm

SandyBridge

NEWMicroarchitecture

32nm

IvyBridge

NEWProcess

22nm

Haswell

NEWMicroarchitecture

22nm

TOCK TOCKTICKTOCKTICKTOCKTICK

10. The Ivy Bridge line

11.1 Introduction

The Ivy Bridge is termed also as the 3. gen. Intel Core processors.

10.1 Introduction (2)

32 nm

216 mm2

995 mtrs

22 nm

160 mm2

1480 mtrs(Resized to

32 nm feature size)

Figure 10.2: Contrasting the Sandy Bridge and Ivy Bridge dies [81]

Sandy Bridge

Ivy Bridge

10.1 Introduction (3)

[84]

10.1 Introduction (4)

Major innovations of Ivy Bridge [80]

11.2 The new 22 nm tri-gate process technology (1)

11.2 The new 22 nm tri-gate process technology [82]

10.2 The new 22 nm tri-gate process technology (1)

[82]

10.2 The new 22 nm tri-gate process technology (1)

[82]

10.2 The new 22 nm tri-gate process technology (1)

[82]

10.2 The new 22 nm tri-gate process technology (1)

[82]

10.2 The new 22 nm tri-gate process technology (1)

Figure: Contrasting 32 nm planar and 22 nm tri-gate transistors [82]

10.2 The new 22 nm tri-gate process technology (1)

[82]

10.2 The new 22 nm tri-gate process technology (1)

[82]

10.2 The new 22 nm tri-gate process technology (1)

[82]

10.2 The new 22 nm tri-gate process technology (1)

Figure: Ivy Bridge chips on a 300 mm wafer

10.2 The new 22 nm tri-gate process technology (1)

Processor Feature size No. of coresL2 + L3

sizeNo. of transistor Die size

Ivy Bridge 22 nm Tri-Gate 4 (+ IGP) 9 MB 1,48 milliárd 160 mm2

Sandy Bridge 32 nm HKMG 4 (+ IGP) 9 MB 995 millió 216 mm2

Sandy Bridge-E 32 nm HKMG 6 16,5 MB 2,27 milliárd 435 mm2

Gulftown 32 nm HKMG 6 13,5 MB 1,17 milliárd 240 mm2

Lynnfield 45 nm HKMG 4 9 MB 774 millió 296 mm2

Bloomfield 45 nm HKMG 4 9 MB 731 millió 263 mm2

Orochi (Bulldozer) 32 nm HKMG SOI 8 (4 modul) 16 MB ~1,2 milliárd 315 mm2

Llano 32 nm HKMG SOI 4 (+ IGP) 4 MB 1,45 milliárd 228 mm2

Thuban 45 nm SOI 6 9 MB 904 millió 346 mm2

Deneb 45 nm SOI 4 8 MB 758 millió 258 mm2

Table: Main implementation parameters of recent processors [81]

10.3 Supervisory Mode Execution Protection (SMEP)

[83]

10.4 System architecture (1)

[81]

10.4 System architecture (2)

[81]

10.5 Performance (1)

[81]

10.5 Performance (2)

[81]

11. The Haswell line

11. The Haswell line of processors (1)

Expected date of introduction: 4/2013

Figure 1.1: Intel’s Tick-Tock development model [Based on 1]

Tick-Tock Development Model

Merom1

NEWMicroarchitecture

65nm

Penryn

NEWProcess

45nm

Nehalem

NEWMicroarchitecture

45nm

Westmere

NEWProcess

32nm

SandyBridge

NEWMicroarchitecture

32nm

IvyBridge

NEWProcess

22nm

Haswell

NEWMicroarchitecture

22nm

TOCK TOCKTICKTOCKTICKTOCKTICK

11. The Haswell line of processors

11. The Haswell line of processors (2)

The Haswell die [85]

11. The Haswell line of processors (3)

Haswell’s system architecture [86]

11. The Haswell line of processors (4)

[80]

11. The Haswell line of processors (5)

[80][80]

11. The Haswell line of processors (6)

[80]

11. The Haswell line of processors (7)

[80]

11. The Haswell line of processors (8)

[80]

To 12. – Additional references

[81]: Olivera, A régóta várt Intel Ivy Bridge tesztje, Prohardware, 2012-04-13, http://prohardver.hu/teszt/intel_ivy_bridge_teszt/az_ivy_bridge.html

[80]: Chappell R., Toll B., Singhal R.: Intel Next Generation Microarchitecture Codename Haswell: New Processor Innovations, IDF 2012

[82]: Bohr M., Mistry K.: Intel’s Revolutionary 22 nm transistor technology, May 2011, http://download.intel.com/newsroom/kits/22nm/pdfs/22nm-Details_Presentation.pdf

[83]: George V., Piazza T.,Jiang H.: Technology Insight: Intel Next Generation Microarchitecture Codename Ivy Bridge, IDF 2011

[84] 3rd Generation Intel Core Processor Family Quad Core Launch Product Information, April 23, 2012 http://download.intel.com/newsroom/kits/core/3rdgen/pdfs/3rd_Generation _Intel_Core_Product_Information.pdf

[85] Ivy Bridge and Haswell die configurations (estimates included), Anandtech, 03-21-2012, http://forums.anandtech.com/showthread.php?t=2234017

[86]: Piazza T.,Jiang H., Hammerlund P., Singhal R.: Technology Insight: Intel Next Generation Microarchitecture Codename Haswell, IDF 2012 SPCS001