they have the same CPU too, but the motherboard for the second one costs 100 euros more, is sli and has two extra free ram slots,
here are the full specs of both.
Cheaper one.
Motherboard: MSI H81M PRO-VD, LGA 1150, Intel® H81 chipset, 2 x SATA III (6 Gb / s), 2 × SATA II, 2x USB 3.0, 4 x USB 2.0, 2 x front USB, 1 × PCIe x16, 2 x PCIe x1, 2 x PS / 2, 8-channel HD audio
Memory: 16384 MB DDR3 RAM, 1600 MHz, Micron® / Elixir® / Kingston®
Disk 1: SSD 120GB Samsung 650 (540 MB / s read | 450 MB / s write)
Disk 2: 1000 GB SATA, Seagate / Toshiba / WD®
Graphics: MSI GTX 970 Gaming 4G, NVIDIA® GeForce® GTX 970, 4096 MB GDDR5, 2x DVI, HDMI, DisplayPort, PCIe 3.0, DirectX 11.2, including NVIDIA® GeForce ™ Experience
Drives: 24 × ASUS Multi format DVD burner (CD-R, CD-RW, DVD ± R, DVD ± RW, DVD R9 (DL))
Audio: 7.1 Sound 8-Channel HD Audio (ALC887)
Network: 10/100/1000 Mbit / s Ethernet LAN, DSL capable, WLAN: 300 Mbit / s wireless card - CSL, RT3690 chipset, 2 removable antennas (Supports IEEE 802.11b / g / n with 11, 54 and 300 Mbit / s)
Audio: 7.1 Sound 8-Channel HD Audio (ALC887)
Card Reader: 8.89 cm (3.5 ") 10in1 card reader (SD, SDHC, microSD, xD, CF I / II, Microdrive, MS, MS Duo, M2, MMC, USB2.0)
Housing: ATX Midi-Tower Design Tesseract, color black, blue illuminated
And here s the more expensive pc.
Motherboard: Gigabyte GA-Z97X-SLI ATX, Connectors Front: Audio, Mic, 2x USB 3.0., Back Panel connectors: 4x USB 3.0, 2x USB 2.0, PS / 2, VGA, DVI, HDMI, LAN, 6x Audio
Memory: 16384 MB DDR3 1600MHz RAM (2x 8GB, 2 free slots available)
Disk 1: 240 GB SSD M.2
Disk 2: 2000 GB SATA-3 (7200 / min, 64 MB cache.)
Graphics: Nvidia GeForce GTX970, 4GB GDDR5 (2x DVI, 3x DisplayPort, 1x HDMI,) PCI Express 3.0 support, Nvidia Maxwell ™, Nvidia Game Stream ™, NVIDIA GPU Boost 2.0, NVIDIA Adaptive Vertical Sync
Drives: DVD burners
Audio: High Definition Audio / 7.1 support / Creative Labs Sound Blaster Cinema 2
Network / LAN / WLAN: 10/100/1000 Mbit / s LAN on Board / 802.11bgn WLAN up to 300MBit / s
Housing: Gaming Tower Gigabyte Alpha (HxWxD Dimensions 522mm x 205mm x 500mm)