Express Pcie
Express Pcie
PCIe 3.0, PCIe 2.0 and PCIe 1.1 Interface Differences
With silicon for PCI Express® 3.0 on the horizon from chip vendors such as Intel®, PLX Technology®, IDT® and others, it might be a good idea to review the interface differences of PCI Express 3.0, PCIe 2.0 and PCIe 1.1. Understanding these interface differences will enable successful integration of the latest PCI Express interface technology into embedded computing applications.
Does it matter that the single board computer / system host board and option card interface is PCI Express version 1.1, 2.0 or even the upcoming PCIe 3.0? Not really, because the basic SBC to option card interconnect functionality is not affected by PCIe version. The reason for this is that the PCI-SIG (Peripheral Component Interconnect Special Interest Group) did a smart thing when PCI Express 1.1 was first developed.
The PCI-SIG built the basic PCIe interconnects in such a manner as to ensure both scalability and backwards compatibility between differing PCIe interfaces. This critical specification feature enables the computer's SBC / SHB, embedded motherboard or backplane hardware to operate with just about any PCI Express option card regardless of interface version. The potential for increased data throughput and performance within an embedded computing system is the primary application difference between the PCI Express 3.0, 2.0 and 1.1 interfaces.
A PCI Express 2.0 COTS board installed in an industrial computer will send its data over to the system host board (SHB) twice as fast as older PCI Express 1.1 boards. Of course, this assumes that the systems' SHB has PCIe 2.0 interfaces. The same scenario plays out in an embedded motherboard. If the motherboard is equipped with PCIe 2.0 card slots then any PCIe 2.0 card placed into one of these slots will send it's data to the board's CPUs twice as fast as in a PCIe 1.1 system. This speed advantage is cumulative and can be critical in high-performance computing applications.
Here's a summary of the key parameters of the various PCI Express interfaces:
Base Clock Speed: PCIe 3.0 = 8.0GHz, PCIe 2.0= 5.0GHz, PCIe 1.1= 2.5GHz
Data Rate (per lane & per direction): PCIe 3.0 = 1000MB/s, PCIe 2.0= 500MB/s, PCIe 1.1= 250MB/s
Total Bandwidth (x16 link): PCIe 3.0 = 32GB/s, PCIe 2.0= 16GB/s, PCIe 1.1= 8GB/s
Data Transfer Rate: PCIe 3.0 = 8.0GT/s, PCIe 2.0= 5.0GT/s, PCIe 1.1= 2.5GT/s
PCIe 3.0 features a number of interface architecture improvements, but communicates at the same interface speeds used in PCIe 2.0. PCIe 3.0 achieves twice the communication speeds of PCIe 2.0 through various architecture and protocol management improvements. PCIe 3.0 silicon will start becoming readily available in 2011.
Single board computers such as the JXT6966 and JXTS6966 support a wide variety of PCI Express option card interfaces. Embedded motherboards like the NTM6900 and WTM7026 feature multiple PCI Express option card slots and BPC7041 and BPC7009 backplanes are examples of PICMG 1.3 backplanes with built-in PCI Express 2.0 embedded computing hardware support.
About the Author
Jim Renehan is the Director of Marketing for Trenton Technology. Jim has held various marketing and application engineering positions in the embedded computing, industrial automation, and automatic identification industries. Jim holds a BS in Industrial Technology from Iowa State University of Science and Technology in Ames, Iowa. For further information, please visit Trenton Technology.
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SYBA SY-PEX40048 4xInternal SATA/2xExternal eSATA PCI Express Controller Card $76.52 |
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SYBA SY-PEX40048 4xInternal SATA/2xExternal eSATA PCI Express Controller Card $89.51 |
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SYBA SY-PEX40048 4xInternal SATA/2xExternal eSATA PCI Express Controller Card $76.52 |
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SIIG SC-SA0L11-S1 2Port SATA 6Gb/s PCI Express Dual Profile Brown Box Controller $35.70 |
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SYBA SY-PEX40048 4xInternal SATA/2xExternal eSATA PCI Express Controller Card $76.52 |
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Dynex DX-ESATAP 2 Port e-SATA PCI-Express Adapter $7.43 |
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Super speed 2 Port USB 3.0 PCI-E Express Card Low Profile Half Height BRACKET $16.00 |
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300M WIRELESS N G PCI-E PCI EXPRESS CARD CORDLESS WIFI NETWORK LAN ETHERNET $13.99 |
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AVerMedia MTVHDDUET HD Duet PCTV tuner (A188) PCI-Express x1 Interface $67.95 |
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XFX - One Radeon HD 1GB DDR3 PCI Express Graphics Card $12.50 |
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PCI-e Express to USB 3.0 Card Adapter NEC D720200AF1 $5.69 |
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Asus PCE-N13 Wireless N 300Mbps PCI-Express Adapter $19.44 |
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NVIDIA Geforce GT 430 4GB PCI Express Video Graphics Card 4 GB HDMI Win7/vis/xp $109.95 |
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Sapphire Radeon HD 5670 PCI-Express Graphics Card 100287L $75.95 |
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300M Wireless LAN Adapter PCI Express Interface Data Link Protocol Card $18.90 |
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Mini GPS u-blox B39 PCI-5S PCI Express Wireless Card $7.99 |
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Mini GPS u-blox B39 PCI-5S PCI Express Wireless Card $12.89 |
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Evga 015-p3-1580-ar Geforce Gtx 580 Graphics Card - Pci Express 2.0 X16 - 1.50 $480.23 |
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4 Port ESATA SATA II PCI-E PCI Express Card SIL3132 $24.82 |
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NEW V2 Chiefmax 650W 20/24 Pin ATX Power Supply w/ PCI Express & SATA $26.99 |
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AMD ATI Radeon 2GB DDR3 PCI Express Video Graphics Card HMDI windows 7/vista/xp $62.95 |
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Uspeed USB 3.0 PCI-E Express Card with Male Power Connector 4 Pin $15.99 |
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Syba SD-PEX-NEC5U -Syba - SD-PEX-NEC5U 5-port PCI Express USB Adapter $49.78 |
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PCI-Express Firewire 800 IEEE1394B 2+1 ports with cable $29.95 |
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PCI Express PCIe USB 3.0 2 Port NEC chip LP Low Profile $37.70 |
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HP NC326M PCI EXPRESS DUAL PORT ADAPTER GBIT 406771-B21 $59.99 |
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NEW STARTECH ST1000SPEX StarTech.com 1 Port PCI Express $35.35 |
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New PCI Express PCI-E PCI E Controller USB 3.0 4 Port Card Work Windows 7 32/64 $12.78 |
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IBM Emulex Network Adapter PCI Express x4 4GB Fibre Channel 42C2069 $50.00 |
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ATI RADEON 126 MB X600 PCI EXPRESS VIDEO CARD $12.00 |
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PEX100S PCI Express Card 10/100 Startech.com $32.99 |
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NEW Dell PNY Quadro FX 570 256MB 128-bit GDDR2 PCI Express Video card 0C306J $99.95 |
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PCI E Express Card to 4 Port USB 3.0 Hub Adapter New $14.99 |
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TP-Link PCI Express Adapter USB/PCI Adapters $50.61 |
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HP NC380T 374443-001 PCI-E Express NIC Dual Port Gigabit Network card 002 $47.15 |
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BCM94311MCG - Broadcom 802.11b/g Mini-PCI Express Card $2.00 |
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NEW Genuine Broadcom Gigibit PCI-E Express Network Interface Card - TKFJY $64.95 |
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ALLIED TELESIS AT-2711FX/ST-901 100BFX ST FIBER PCI EXPRESS ADAPTER CARD TAC $151.92 |
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PCIe Gigabit Ethernet LAN Network 1G PCI-E Express Card $13.61 |
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PCIe Gigabit Ethernet LAN Network 1G PCI-E Express Card $13.99 |
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VisionTek Radeon HD 6870 1GB 256-bit GDDR5 PCI Express 2.1 x16 Graphics Card $119.99 |
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NVIDIA Quadro FX 5800 4GB 512-bit PCI Express 2.0 x16 $610.00 |
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Gigabyte Radeon HD5750 1 GB DDR5 128B 740MHz 2DVI/HDMI/VGA PCI-Express 2.1 Video $103.97 |
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Zotac ZT-40606-20L GeForce GT 430 Graphic Card Core 1GB DDR3 SDRAM PCI Express $72.63 |
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Intel 62205AN.HMWWB 802.11a/b/g/n Mini PCI-Express Wireless Adapter $22.47 |
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Creative Sound Blaster X-Fi Titanium Fatal1ty PCI Express x1 Sound Card $71.00 |
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matrox P65-MDDE128F Millennium P650 128MB PCI Express x16 Workstation Video Card $24.99 |
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ATI FirePro 2450 512MB GDDR3 PCI Express Low Profile Workstation Graphics Card $184.99 |
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Gigabit PCI Express Network Card, Intellinet 522533 $31.75 |
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Gigaware 2-Port USB 3.0 PCI Express Card 2500106 Sealed New Fast! $19.98 |
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StarTech 2-Port PCI Express 1394a FireWire 400 Card $24.77 |
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CREATIVE Sound Blaster X-Fi Titanium HD Sound Card - PCI-Express $243.91 |
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406773-001 HP PCI Express Gigabit NIC module 416557-001 $195.00 |
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PNY GeForce 8400 GS Graphic Card - 1 GB DDR3 SDRAM - PCI Express x16Low-profile $52.99 |
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SYBA SD-SA2PEX-2IR PCI Express SATA II Controller Card $19.50 |
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SIIG DP SoundWave PCI Express x1 (IC-510111-S2) Sound Card $30.99 |
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NEW GIGAWARE PCI USB 3.0 PCI Express Card $15.95 |
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ZOTAC NVIDIA GeForce GT 220 (ZT-20202-10L) 512 MB DDR2 SDRAM PCI Express 2.0 ... $29.99 |
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VGA CARD.Nvidia Chip. 1GB Memory..PCI Express Slot. NGT520C-1GQK-F. $14.00 |
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Dell XX347 - ATI Radeon HD2400 Pro 256MB DVI TV-out PCI-Express Video Card $14.65 |
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550W Watt ATX Power Supply P4 AMD SATA Fan 20/24 Pin PCI Express Cable *NEW* $22.41 |
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2 Port PCI E Express to USB 3.0 Card PCIE Win 7 (NEC) $12.98 |
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DIAMOND 5450PE3512SB Radeon HD 5450 Graphic Card - 512 MB - PCI Express $41.99 |
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Radeon HD 4870 1GB DDR5 Graphics Card, AS-IS $11.00 |
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ASUS Radeon EAH3650 SILENT/HTDI/512MB DDR3 PCI-Express 2.0 x16 Video Card TESTED $30.00 |
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Zotac ZT-40502-10L GeForce GTS 450 AMP Ed.- 1GB, GDDR5, PCI-Express $94.99 |
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EVGA GTS 250 Nvidia graphics card 512MB PCI Express $28.00 |
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Atheros WLM54GP23 WLAN Wireless Mini PCI Express Card $10.00 |
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BFG NVIDIA GeForce GTX 275 896MB PCI Express* $80.99 |
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Realtek RTK-RTL8187SE (MS-6894) Mini PCI Express Wireless Wifi Module MSI Advent $15.70 |
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HP PAVILION DV8000 PCI EXPRESS CARD SLOT 403828-001 $7.00 |
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PNY VCGGTX580XPB-CG GeForce GTX 580 Commercial Grade 1.5GB GDDR5 PCI-Express 2.0 $419.99 |
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NEW Syba SD-PEX15021 Serial (RS232 COM1 DB9) port PCI Express PCIe Card $17.59 |
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SYBA 2-Port eSATA External+SATA2 PCI-express Controller Card SD-SA2PEX-2E $19.09 |
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HIS RADEON HD 6770 PCI EXPRESS 2.1 1GB 1080P HDMI 1.4 VIDEO CARD $149.00 |
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PEX100S Startech 10/100 PCI Express NIC Card $19.00 |
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Firepro 2450 Graphics Card - Ati Firepro 2450 - 256mb - Pci Express X1 $273.64 |
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ASUS HD7970-DC2T-3GD5 Radeon HD 7970 3GB 384-bit GDDR5 PCI Express 3.0 x16 HDCP $485.00 |
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RAID Card for Apple Mac Pro 2009 2010 Model ~ PCI-E Express MB845Z $225.00 |
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SAPPHIRE 100314SR Radeon HD 6870 1GB 256-bit GDDR5 PCI Express 2.1 x16 $102.50 |
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PCI-E Express to 4 Port USB 3.0 SuperSpeed Card Adapter $15.29 |
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HP NC110T PCI Express Gigabit Server Adapter 434982-001 $62.99 |
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41W1027 - IBM - MINI PCI INTEL PRO WIRELESS 3945ABG MINI-PCI EXPRESS ADAPTER $5.99 |
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300M WIRELESS N G PCI-E PCI EXPRESS CARD CORDLESS WIFI NETWORK LAN ETHERNET NIC $14.99 |
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NEW ATI Radeon X600 SE 128 MB PCI-Express DVI S-Video Display Card H9142 $15.99 |
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3ware 9650SE-12ML SATA 12 Channel PCI-E RAID Controller - PCI Express $415.00 |
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BFG NVIDIA GeForce 6800 GT OCX 256 MB GDDR3 SDRAM PCI Express x16 Graphics Card $59.95 |
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NEW CyberSerial 4s PCIe PC computer interface PCI express card no. JJ-E40011-S1 $15.00 |
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StarTechm PEX4S553 4 Port Native PCI Express RS232 Serial Adapter Card w/ 16550 $92.38 |
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MSI N240GT-MD1G/D5 GeForce GT 240 1GB 128-bit GDDR5 PCI Express 2.0 x16 HDCP $11.00 |
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StarTech.com PCI Express X1 to X16 LP Slot Extension Adapter PEX1TO162 $32.99 |
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NEW MSI Video GeForce GTX560Ti 2G GDDR5 PCI-e/Express Video Card $319.99 |
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680 Watt 20/24 pin ATX Power Supply SATA PCI Express INTEL AMD i5 i7 FX X4 X3 X2 $24.95 |
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NEW Asus Radeon HD6450 1GB PCIe DDR3 PCI-e/Express Video Card $69.99 |
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NEW Asus Radeon HD6450 1GB PCIe DDR3 PCI-e/Express Video Card $69.99 |
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BFG NVIDIA GeForce 9600 GT 512 MB GDDR3 SDRAM PCI Express 2.0 x16 Graphics Card $99.95 |
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MSI nVidia GeForce 210 512 MB DDR2 VGA/DVI PCI-Express Video Card N210-D512D2 $30.49 |
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BFG NVIDIA GeForce 7900 GS OCE 256 MB GDDR3 SDRAM PCI Express x16 Graphics Card $64.95 |
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BFG NVIDIA GeForce 8800 GTS 320 MB GDDR3 SDRAM PCI Express x16 Graphics Card $73.95 |
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BFG NVIDIA GeForce 9800 GTX 512 MB GDDR3 SDRAM PCI Express 2.0 x16 Graphics Card $123.95 |
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Intel EXPI9402PT Pro/1000 PT Dual Port PCI-E x4 Server Adapter $82.99 Conserve valuable PCI Express (PCIe) server slots while adding multi-port Gigabit Ethernet capability with the Intel PRO/1000 PT Dual Port Server Adapter. |
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