Prednáška 7-8

Procesor Core i7:

FEATURESIntel Core i7 Processor SeriesKey Features & Specifications

 Intel Core i7 965

Extreme Edition

Intel Core i7 940

1Intel Core i7 920

Clock Speed 3.2 GHz 2.93 GHz 2.66 GHz

QPI Speed (GT/s)

6.4 4.8 4.8

CPU Socket 1366 1366 1366

Shared L3 Cache

8 MB 8 MB 8 MB

MemoryDDR3 Triple

Channel

DDR3 Triple

Channel

DDR3 Triple

Channel

TDP 130 Watts 130 Watts 130 Watts

Overspeed Protection

Removed Enforced Enforced

ArchitectureNew Intel 45 nm

Nehalem

New Intel 45 nm

Nehalem

New Intel 45 nm

Nehalem

Quad Core Yes Yes Yes

Key Platform Features

Intel Hyper-Threading Technology 8-threaded

performance on 4 cores

Intel Turbo Boost Technology

8M Shared Intel Smart Cache

Integrated Memory Controller with support for 3

channels of DDR3 memory

Intel QuickPath interconnect to Intel X58

Express Chipset

Nehalem Innovations Dynamically managed threads, cores, cache, interfaces, and power Simultaneous multi-threading (SMT) for enabling a more energy efficient means of increasing

performance for multi-threaded workloads Innovative extensions to the Intel Streaming SIMD Extensions 4 (SSE4) that center on

enhancing XML, string, and text processing performance Superior multi-level cache, including an inclusive shared L3 cache New high-end system architecture that delivers from two to three times more memory

bandwidth Performance-enhanced dynamic power management

THE EVOLUTIONWe're not going to go all the way back to single core processors, but we wanted to revisit the evolution of processors leading us to Core I7.

In 2005-2006 we saw 65nm dominating the market, in 2007 45nm Penryn hit the streets, and 2008 ushers in 45nm Nehalem where we are today. Up and coming (projected) we see the 32nm Westmere and Sandy Bridge slated for 2009-2010.

We received the brown box version of the Intel Desktop DX58SO Extreme but that would have been kind of boring so we located a shot of the retail box for you to lust after.

Niekolko testov:

Sisoft SANDRA 2009 Professional SP1"SiSoftware Sandra (the System ANalyser, Diagnostic and Reporting Assistant) is an information & diagnostic utility. It should provide most of the information (including undocumented) you need to know about your hardware, software and other devices whether hardware or software. It works along the lines of other Windows utilities, however it tries to go beyond them and show you more

of what's really going on. Giving the user the ability to draw comparisons at both a high and low-level. You can get information about the CPU, chipset, video adapter, ports, printers, sound card, memory, network, Windows internals, AGP, PCI, PCI-X, PCIe (PCI Express), database, USB, USB2, 1394/Firewire, etc."

We expected the Core I7 965 Extreme to beat the Q6600 but we didn't expect it to beat it that badly. The Core I7's Hyper-Threading advantage really shows in the Sandra Arithmetic test. Keep in mind that we're running the Q6600 at 3.6 GHz with OCZ DDR3 2000. That kinda of puts things into perspective.

The Core I7 965 Extreme is a Multimedia monster when compared to the Q6600. Even running at 3.2GHz the Core I7 kills the Q6600 runing at 3.6GHz. When we kicked the Core I7 965 Extreme up to 3.84GHz, the highest we could go with the Thermalright Ultra 120 RT air cooling, the Core I7 widened the lead even more. We might add that the Core I7 was in no way topped out at 3.86GHz, but that was as high as we could go given the thermal limititation placed on the CPU by the Thermalright Ultra.

In the Buffered Memory test the Core I7 IMC (Integrated Memory Controller) out did the Q6600 and performance wise provided more than twice the bandwidth of the Q6600 running much faster DR3 2000 memory. Core I7 and DDR3 Triple channel will bring DDR3 to the forefront of technology. Considering the Samsung DDR3 we're testing with runs at 1066, we can only imagine what it'll do with a good set of 1333 or 1600 MHz ram!

VOLTAGES,TEMPS, OVERCLOCKING, & GOODIES

Voltages 

Power ConsumptionIn Watts

Tested with GTX-260 or GTX-260 in SLI unless noted

  Idle Load

Gigabyte EP45-Extreme Q6600 173 295

Gigabyte EP45-DQ6 Q6600 167 283

Asus P5KC Q6600 160 281

EVGA 790i Q6600 (SLI Running) 215 451

EVGA 790i Q6600 (Single GPU) 172 307

Intel DX58SO Core I7 965 (Single GPU) 181 325

Intel DX58SO Core I7 965 (Single GPU 4870x2) 191 376

Intel DX58SO Core I7 940 (Single GPU) 190 322

Intel DX58SO Core I7 920 (Single GPU) 192 320

Core I7 series really isn't taking any more voltage than previous generations. You can only read so much into the voltage readings. They're taken with a Kill A Watt power meter and reflect whole system power consumption. Idle was taken at the desktop with no unneeded background tasks running. Load was taken with Prime95 driving all four physical cores, all eight logical cores as hard as they could go. We were also looping 3Dmark Vantage while running Prime95 to get maximum power consumption.

Temperatures 

CPU Temperature Core I7 Series

Core I7 965 3.2 GHz Stock Voltage 29C 49C

Core I7 965 3.86 1.275 Vcore 41C 59C

Core I7 940 2.93 GHz Stock Voltage 29C 48C

Core I7 920 2.66 GHz Stock Voltage 29C 47C

Core I7 920 3.433 1.2 Vcore 39C 57C

After a BIOS revision we got from Intel temperatures were reasonable on the Core I7 series. Previous to that we believe that the programs we were using to read temperatures were wrong. The BIOS fix brought that right up to snuff and using Core Temp, Speed Fan, HWinfo32, and CPUID HWinfo to verify temps we were satisfied that they were reading correctly. To get those temps we used the same method as when we got maximum voltages.

The Test

CPU: AMD Phenom 9950 (2.6GHz)Intel Core i7-965 (3.2GHz)Intel Core i7-940 (2.93GHz)Intel Core i7-920 (2.66GHz)Intel Core 2 Extreme QX9770 (3.2GHz/1600MHz)Intel Core 2 Quad Q9650 (3.00GHz/1333MHz)Intel Core 2 Quad Q9450 (2.66GHz/1333MHz)

Motherboard: ASUS P6T Deluxe (Intel X58)Intel DX58SO (Intel X58)Intel DX48BT2 (Intel X48)Gigabyte GA-MA790FX (AMD 790FX)

Chipset: Intel X48Intel X58

AMD 790FX

Chipset Drivers: Intel 9.1.1.1010 (Intel) AMD Catalyst 8.9

Hard Disk: Intel X25-M SSD (80GB)

Memory: G.Skill DDR2-800 2 x 2GB (4-4-4-12)Qimonda DDR3-1066 4 x 1GB (7-7-7-20)

Video Card: eVGA GeForce GTX 280

Video Drivers: NVIDIA ForceWare 180.43 (Vista64)NVIDIA ForceWare 178.24 (Vista32)

Desktop Resolution: 1920 x 1200

OS: Windows Vista Ultimate 32-bit (for SYSMark)Windows Vista Ultimate 64-bit

Overclocking: The Initial Results

Click to Enlarge

Our first overclock test with the top Core i7 processor, the 965XE, suggests an average high-end air or water-cooled, 24/7 stable overclock of about 4.2GHz (roughly the same as the latest Yorkfield-based, quad-core processors available right now). Our VCore setting had to increase to 1.5V for stable operation, a significant jump from the 1.4125V required at 4GHz on this board. We set QPI/Dram to 1.325V and VDimm to 1.65V. Our top clock with this particular CPU on our FreeZone Elite cooler is 4.5GHz with 1.55V.

Click to Enlarge

Our second overclock test utilized the 920 processor that clocks in at a stock 2.66GHz. The multiplier is locked on this CPU and the 940 model so overclocking is done via Bclk. We were able to reach a 24/7 stable 3.8GHz overclock on 1.5V with memory (BIOS 0503 raised our voltage requirements) at DDR3-1520 (7-7-7-20) on 1.675V. We think 4GHz is possible on this board with additional tuning and a BIOS update. However, Bclk is limited to around 200~220 on the current i7 series, so additional headroom is probably limited on this CPU. However, performance was excellent during overclocking and a 3.6GHz overclock was possible with 1.425V. This CPU reminds us of the Q6600 at launch, an excellent overclocker that continues to be a bargain.

Although the new architecture allows for near-independent tuning of the processor cores and the underlying memory subsystem, mastering your system will still require a fair amount of patience and consideration. There are numerous tuning tradeoffs with this platform that we are still working through at this time. One such trade off is determining whether to use high CPU multipliers and standard memory ratios when overclocking versus a lower CPU multiplier and high Bclck (bus speed) combination.

In early testing, we have found advantages to both methods depending on the application. It appears right now that a combination of higher Bclk with a lower CPU multiplier will provide a slightly better performing platform, if you can properly balance the memory timings, voltages, and speed. We will help direct your efforts in this process by providing a complete overclocking guide for Core i7 shortly.

General Application PerformanceSYSMark 2007 is an application benchmark suite that plays back real world usage scenarios in four categories (E-Learning, Video Creation, Productivity and 3D), using the following applications:

Adobe After Effects 7Adobe Illustrator CS2Adobe Photoshop CS2AutoDesk 3ds Max 8Macromedia Flash 8Microsoft Excel 2003Microsoft Outlook 2003Microsoft PowerPoint 2003Microsoft Word 2003Microsoft Project 2003Microsoft Windows Media Encoder 9 seriesSony Vegas 7SketchUp 5WinZip 10.0

Performance is measured in each individual category and then an overall score is reported.

We don't see a huge performance increase thanks to Nehalem, we're looking at an average boost of 7 - 12% at the same clock speed as Penryn. The Core i7-965 managed a 7% performance advantage over the QX9770, while the i7-920 pulled 12% on the identically clocked Q9450.

The biggest performance boost is naturally in the 3D suite, the rest of the applications are showing 5 - 10% performance boosts at the same clock.

3D Rendering PerformanceOur first 3D rendering test is POV-Ray 37 beta 29 and its SMP benchmark, the performance is measured in ray traced pixels per second:

As we've already seen, Nehalem's multi-threaded 3D rendering performance is absolutely insane - the $284 Core i7-920 is faster than the $1400 Core 2 Extreme QX9770.

Next up we have Cinebench with both its single and multi-threaded rendering tests:

Nehalem's single-threaded performance is still improved over Penryn, here we're seeing a 13.7% increase in performance at 3.2GHz.

Toss more threads at the i7 and the performance boost jumps to 34%, once again the i7-920 is faster than the QX9770.

Our final 3D rendering benchmark is the SPECapc 3dsmax 8 CPU rendering test run on 3dsmax 9:

That's another 30%+ advantage for Nehalem. If you do a lot of 3D rendering on your system, Intel is going to give you $1400 worth of performance for $284. Merry Christmas.

Nehalem: The Unwritten Chapters Nehalem can be much more power efficient than Penryn and it can overclock quite well. What follows are some...

November 7, 2008

Intel Core i7 920 940 965 Review & Overclocking - PAGE 1 William Henning - Sunday, November 2nd, 2008

Today we get to publish our review on the long awaited Core i7 "Nehalem" 920, 940 and 965 Extreme, along with its Intel DX58SO motherboard based on the new X58 Northbridge and ICH10 southbridge.

Before talking about the Core i7 family (formerly known as Nehalem), I'll try to pre-empt some of your questions:

Release date: Sometime later this November Core i7 920 runs at 2.66GHz, and will sell for $284 Core i7 940 runs at 2.93GHz, and will sell for $562

Core i7 965 Extreme runs at 3.20GHz, and will sell for $999 The DX58SO is listed at some retailers already for around $350

The above processor pricing is in 1000 piece OEM quantities.The Core i7 is quite a beast comprised of 731 million transistors, with a 263mm^2 die.

Nehalem is the 'tock' following the 'tick' of the Penryn (Core 2), and will itself be followed by the 'tick' of Westmere in 2009 and 'tock' of Sandy Bridge in 2010. Both Westmere and Sandy Bridge are planned to be built with a 32nm

process, with Westmere being a "mere" shrink and optimization of Nehalem, and Sandy Bridge being a new architecture. But enough of the future for now.

For Nehalem, Intel's design philosophy consisted of an enhanced core with new performance features and the re-introduction of multi-threading. Of course a high preformance processor core - never mind four multi-threaded ones - need a lot of data to keep busy, therefore Intel designed a new cache hierarchy, and made a whole new platform based on its Quick Path Interconnect (hereafter QPI) and a new triple channel on-processor memory

controller. While they were at it, they also added some new instructions and improved support for virtualization.The following information on the Core i7 (Nehalem) architecture was taken from the Intel Development Forum

papers.

Oficialne materialy Intel:

C:\Vyuka\Prednaska_7\CPUi7\Processor Spec Finder.mht

C:\Vyuka\Prednaska_7\CPUi7\Filter Summary.mht

C:\Vyuka\Prednaska_7\CPUi7\Intel® Product Comparison Chart.mht

C:\Vyuka\Prednaska_7\CPUi7\Intel® Product Comparison Chart_1.mht

C:\Vyuka\Prednaska_7\CPUi7\Intel® Core™ i7 Processor - Specifications.mht

C:\Vyuka\Prednaska_7\CPUi7\Intel® Core™ i7 Processor I7-920 - SLBCH.mht

C:\Vyuka\Prednaska_7\CPUi7\Intel® Core™ i7 Processor I7-940 - SLBCK.mht

C:\Vyuka\Prednaska_7\CPUi7\Intel® Core™ i7-940 Processor (8M Cache, 2_93 GHz, 4_80 GT-s Intel® QPI).mht

C:\Vyuka\Prednaska_7\SSPEC-QDF Reference.mht

C:\Vyuka\Prednaska_7\CPUi7\Intel® 64 Architecture.mht

C:\Vyuka\Prednaska_7\CPUi7\Execute Disable Bit and Enterprise Security.mht

C:\Vyuka\Prednaska_7\CPUi7\320834.pdf C:\Vyuka\Prednaska_7\CPUi7\320835.pdf

C:\Vyuka\Prednaska_7\CPUi7\320836.pdf C:\Vyuka\Prednaska_7\CPUi7\320837.pdf

ATOM procesor:

C:\Vyuka\Prednaska_7\Atom\Intel® Atom Processor – Overview.mht

C:\Vyuka\Prednaska_7\Atom\Intel® Atom Processor - Technical Documents.mht

C:\Vyuka\Prednaska_7\Atom\Intel® Atom™ Processor for Mobile Internet Devices.mht

C:\Vyuka\Prednaska_7\Atom\Atom_Product_Brief.pdf

C:\Vyuka\Prednaska_7\Atom\319535.pdf C:\Vyuka\Prednaska_7\Atom\319536.pdf

C:\Vyuka\Prednaska_7\Atom\319537.pdf C:\Vyuka\Prednaska_7\Atom\319538.pdf

C:\Vyuka\Prednaska_7\Atom\319980.pdf C:\Vyuka\Prednaska_7\Atom\319995.pdf

C:\Vyuka\Prednaska_7\Atom\320218.pdf

Záver procesorov a základných dosiek:

C:\Vyuka\Prednaska_7\ARK.mht

C:\Vyuka\Prednaska_7\desktop_prod_brief.pdf

C:\Vyuka\Prednaska_7\Digital Home Performance.mht

C:\Vyuka\Prednaska_7\Digital Home Performance_1.mht

C:\Vyuka\Prednaska_7\Digital Office Performance.mht

C:\Vyuka\Prednaska_7\Digital Office Performance_1.mht

C:\Vyuka\Prednaska_7\Products (Formerly Bloomfield).mht

C:\Vyuka\Prednaska_7\Products (Formerly Penryn).mht

C:\Vyuka\Prednaska_7\Products (Formerly Wolfdale).mht

C:\Vyuka\Prednaska_7\Products (Formerly Yorkfield).mht

C:\Vyuka\Prednaska_7\Find and select motherboards or barebones based on Intel technology.mht

C:\Vyuka\Prednaska_7\Intel® Core™2 Duo Processor - Specifications.mht

C:\Vyuka\Prednaska_7\Intel® Processor Numbers.mht

C:\Vyuka\Prednaska_7\Intel® Processor Numbers_1.mht

C:\Vyuka\Prednaska_7\Intel® Product Comparison Chart_CPU.mht

C:\Vyuka\Prednaska_7\Intel® Product Comparison Chart_Chipsets.mht

Zaciname notebooky:

Praktická ukážka najmodernejšieho notebooku serie ASUS M50VN