Here's the current generation: 
* X-box 360
* Playstation 3
* Wii
X-Box 360 
SpecificationsCustom IBM PowerPC-based CPU
Three symmetrical cores running at 3.2 GHz each
Two hardware threads per core; six hardware threads total
VMX-128 vector unit per core; three total
128 VMX-128 registers per hardware thread
1 MB L2 cache
CPU Game Math Performance 9 billion dot product operations per second
Custom ATI Graphics Processor 10 MB of embedded DRAM
48-way parallel floating-point dynamically scheduled shader pipelines
Unified shader architecture
Polygon Performance 500 million triangles per second
Pixel Fill Rate 16 gigasamples per second fill rate using 4x MSAA
Shader Performance 48 billion shader operations per second
Memory 512 MB of 700 MHz GDDR3 RAM
Unified memory architecture
Memory Bandwidth 22.4 GB/s memory interface bus bandwidth
256 GB/s memory bandwidth to EDRAM
21.6 GB/s front-side bus
Overall System Floating-Point Performance 1 teraflop
Storage Detachable and upgradeable 20GB hard drive
12x dual-layer DVD-ROM
Memory Unit support starting at 64 MB
I/O Support for up to four wireless game controllers
Three USB 2.0 ports
Two memory unit slots
Optimized for Online Instant, out-of-the-box access to Xbox Live features with broadband service, including Xbox Live Marketplace for downloadable content, gamer profile for digital identity, and voice chat to talk to friends while playing games, watching movies, or listening to music
Built-in Ethernet port
Wi-Fi ready: 802.11a, 802.11b, and 802.11g
Video camera ready
Digital Media Support Support for DVD-Video, DVD-ROM, DVD-R/RW, DVD+R/RW, CD-DA, CD-ROM, CD-R, CD-RW, WMA CD, MP3 CD, JPEG Photo CD
Ability to stream media from portable music devices, digital cameras and Windows XP-based PCs
Ability to rip music to the Xbox 360 hard drive
Custom playlists in every game
Built-in Media Center Extender for Windows XP Media Center Edition 2005
Interactive, full-screen 3-D visualizers
High-Definition Game Support All games supported at 16:9, 720p, and 1080i, anti-aliasing
Standard-definition and high-definition video output supported
Audio Multi-channel surround sound output
Supports 48KHz 16-bit audio
320 independent decompression channels
32-bit audio processing
Over 256 audio channels
Physical Specs Height: 83 mm
Width: 309 mm
Depth: 258 mm
Weight: 7.7 lbs.
System Orientation Stands vertically or horizontally
Customizable Face Plates Interchangeable to personalize the console
Playstation 3
CPU/Cell Processor PowerPC-base Core @3.2GHz
1 VMX vector unit per core
512KB L2 cache
7 x SPE @3.2GHz
7 x 128b 128 SIMD GPRs
7 x 256KB SRAM for SPE
1 of 8 SPEs reserved for redundancy total floating point performance : 218 GFLOPS
GPU RSX @550MHz
1.8 TFLOPS floating point performance
Full HD (up to 1080p) x 2 channels
Multi-way programmable parallel floating point shader pipelines
Sound Dolby 5.1ch, DTS, LPCM, etc. (Cell-base processing)
Memory 256MB XDR Main RAM @3.2GHz
256MB GDDR3 VRAM @700MHz
System Bandwidth Main RAM 25.6GB/s
VRAM 22.4GB/s
RSX 20GB/s (write) + 15GB/s (read)
SB 2.5GB/s (write) + 2.5GB/s (read)
System Floating Point Performance 2 TFLOPS
HDD Detachable 2.5" HDD slot x 1
USB Front x 4, Rear x 2 (USB2.0)
Memory Stick standard/Duo, PRO x 1
SD standard/mini x 1
CompactFlash (Type I, II) x 1
Ethernet (10BASE-T, 100BASE-TX, 1000BASE-T) x 3 (input x 1 + output x 2)
Wi-Fi IEEE 802.11 b/g
Bluetooth Bluetooth 2.0 (EDR)
Controller Bluetooth (up to 7)
USB2.0 (wired)
Wi-Fi (PSP®)
Network (over IP)
Screen size 480i, 480p, 720p, 1080i, 1080p
HDMI HDMI out x 2
Analog AV MULTI OUT x 1
Digital audio DIGITAL OUT (OPTICAL) x 1
Drives CD-ROM
PlayStation®2 CD-ROM
CD-DA (ROM), CD-R, CD-RW
Super Audio CD Hybrid disc(HD layer/CD layer), HD layer
DualDisc (audio side), DualDisc (DVD side)
DVD-ROM, DVD-R, DVD-RW, DVD+R, DVD+RW
BD-ROM, BD-R, BD-RE
Wii
Processors:* CPU: PowerPC based "Broadway" processor, made with a 90 nm SOI CMOS process[58], reportedly clocked at 729 MHz[55][56]
* GPU: ATI "Hollywood" GPU made with a 90 nm CMOS process[59], reportedly clocked at 243 MHz[55][56]
Memory:* 88 MB[55][56] main memory (24 MB "internal" 1T-SRAM,[60] 64 MB "external" GDDR3 RAM)[61]
* 3 MB GPU texture memory[55]
Ports and peripheral capabilities:* Up to four Wii Remote controllers (connected wirelessly via Bluetooth).
* One SD memory card slot.
* Two USB 2.0 ports.
* One Sensor Bar port.
* Four Nintendo GameCube controller ports.
* Two Nintendo GameCube memory card ports.
* Mitsumi DMW-W004 WiFi 802.11b/g wireless module
* Compatible with optional USB 2.0 to Ethernet LAN adaptor.
Built-in content ratings systems:* CERO,[citation needed] PEGI, ESRB
Storage:IBM "Broadway" CPU within the Wii console
* 512 MB built-in flash memory.
* Expansion available via SD card memory, 2 GB maximum supported capacity.
* GameCube Memory Cards (for saving GCN games only).
* Slot-loading disc drive compatible with:
* 8 cm GameCube optical disc.
* 12 cm Wii optical disc.
* Mask ROM by Macronix.[62]
Video:* Up to 480p[63](NTSC) or 576p (PAL/SECAM), will work with any TV or projector.
* Component (including Progressive scan), RGB SCART,[64] S-Video, or composite output.
* 16:9 anamorphic widescreen.[63]
Audio:* Main: Stereo - Dolby Pro Logic II-capable.[65]
* Controller: Built-in speaker
