determine upload & download speeds

THEREDT,

You can go to speasdtest.net to see what speeds your getting.

Below are the specs for the Ethernet network card and the wifi card. 

The Realtek RTL8111E Gigabit Ethernet controller combines a triple-speed IEEE 802.3 compliant Media Access Controller (MAC) with a triple-speed Ethernet transceiver, PCI Express® bus controller, and embedded memory. With state-of-the-art DSP technology and mixed-mode signal technology, the RTL8111E offers high-speed transmission over CAT 5 UTP cable or CAT 3 UTP (10Mbps only) cable. Functions such as Crossover Detection & Auto-Correction, polarity correction, adaptive equalization, cross-talk cancellation, echo cancellation, timing recovery, and error correction are implemented to provide robust transmission and reception capability at high speeds.

Features
Integrated 10/100/1000 transceiver
Auto-Negotiation with Next Page capability
Supports PCI Express™ 1.1
Supports pair swap/polarity/skew correction
Crossover Detection & & Auto-Correction
Wake-on-LAN and remote wake-up support
Microsoft® NDIS5, NDIS6 Checksum Offload (IPv4, IPv6, TCP, UDP) and Segmentation Task-offload (Large send and Giant send) support
Supports Full Duplex flow control (IEEE 802.3x)
Fully compliant with IEEE 802.3, IEEE 802.3u, IEEE 802.3ab
Supports IEEE 802.1P Layer 2 Priority Encoding
Supports IEEE 802.1Q VLAN tagging
Serial EEPROM
Transmit/Receive on-chip buffer support
Supports power down/link down power saving
Supports PCI MSI (Message Signaled Interrupt) and MSI-X
Supports Receive-Side Scaling (RSS)
64-pin QFN package (Green package)
Embeds an adaptive equalizer in PCI express PHY (PCB traces to reach 40 inches)

Depending on the wireless card you have installed. Below are the specs for the 2 that were offered with the system.

The Dell Wireless 1702 Card is a highly integrated, all CMOS, single chip bluetooth solution for PC applications. The Dell Wireless 1702 supports the bluetooth V3.0 standard and can be combined with 802.11 radio devices to create a bluetooth v3.0+HS solution. It includes a bluetooth EDR radio, a 32-bit CPU, USB2.0 full-speed interface, two on-chip 1.2V voltage regulators, serial flash interface, on-board PLL, and on-chip SRAM. It also has a WLAN coexistence interface to ensure coexistence with WLAN devices co-located in the same system.

Features:

All CMOS solution for IEEE 802.11 b/g/n WLANs
Supports 65Mbps for 20MHz and 150Mbps for 40MHz channel operations
Wireless multimedia enhancements quality of service support (QoS)
Supports for IEEE 802.11e, and IEEE 802.11i standards
WEP, TKIP and AES hardware encryption
Single-chip Bluetooth v3.0 solution
Integrated 32-bit CPU with 32KB data RAM and 256KB program RAM

The Intel® Centrino® Advanced-N 6205 dual band (2.4 GHz and 5 GHz), 2x2 adapter delivers up to 300 Mbps bandwidth, extended range and unique Intel-only features including Intel® Wireless Display, and Intel® vPro™ technology support.

Features:

Performance - delivers up to 300 Mbps and two times greater range with 2 antennas for faster, more reliable wireless connectivity in more places.
Dual band - allows connectivity at 2.4 GHz to access older 802.11g/b networks and 5 GHz for higher speeds and greater network capacity.
Lower power - enables long battery life for greater mobility.
Business class - supports Intel® vPro™ technology, Intel® Active Management Technology and Intel® PROSet/Wireless Enterprise Software for enterprise Wi-Fi client manageability, improved security and streamlined deployment.
Intel® Wireless Display - Share PC and online content wirelessly on an HDTV.
Intel® My WiFi Technology - Creates a Wi-Fi Personal Area Network (PAN) solution for the laptop to connect directly to other Wi-Fi devices.