Test Setup

rtpic Netgear WNDR4700 CENTRIA Review

Figure 1.1

The router was flashed to the latest firmware, SPI firewall disabled and the machine on the LAN side is placed in the DMZ.

For the testing of the router's routing throughput, we used two machines, one connected to the WAN port of the router and the other to the LAN port as shown in Figure 1.1. For both WAN to LAN and LAN to WAN tests, we ran two benchmark software, PassMark Performance Test and IPerf. Each test was repeated three times and the average is taken as the final result. Figure 1.2 shows the following parameters used on the IPerf.

Server
>iperf -s -w 128k
Client
>ipert -c [server address] -w 128k -P 5

Figure 1.2
 

Matrix21 Max Session Tool was used to test for the maximum number of sessions. Since the maximum connection the machine could generate is 41,000 sessions, which is far less than most of the current routers are able to handle. With reference from Figure 1.3, we devised a method to run a number of  server-client pairs simultaneously. This is accomplished through the use of virtualization. So, 41,000 per pair multiply by the total number of pairs would give the total number of simultaneous sessions.

maxconn Netgear WNDR4700 CENTRIA Review

Figure 1.3

 

For wireless throughput tests, one machine is connected to the LAN port and the other by wireless. A 200MB file is then transfered from the LAN machine over to the wireless machine and vice versa. This is to test the upstream and downstream quality of the wireless link. The wireless connection is encrypted with WPA2-AES. The test is performed on the 20MHz channel and the 40MHz channel. The wireless client is then moved to different rooms (Figure 1.5) and the tests are repeated again. This is to compare the transfer quality when the signal line of sight is being obstructed.

homesetup Netgear WNDR4700 CENTRIA Review

Figure 1.4

 

These are the hardware specs of the machines used in this testing.

PC A

OS: Microsoft Windows 7 Sp1 64-bit
CPU: I7 920 @ 3.4GHz
RAM: 8GB DDR3
NIC: Intel Pro/1000 ET Dual

PC B

OS: Microsoft Windows 7 Sp1 64-bit
CPU: AMD Turion X2 RM-74 2.2GHz
RAM: 3GB DDR2
NIC: Realtek 8111B
WiFi: Netgear A6200 AC Adapter

 

Test Results

 

Firmware Version 1.0.0.50

 

Routing Throughput
Direct Connection 942 Mbps
Wan to Lan 754 Mbps
Lan to Wan 707 Mbps
Max. Sessions 45539

The WNDR4700 did not manage to achieve near-wire speeds for both WAN to LAN and LAN to WAN but 700 Mbps is still higher than the maximum speeds of most home broadband connections. It is also capable of managing a total of 45,539 simultaneous sessions.

 

Internal Storage Throughput
  Read Write
SAMBA 467.2 Mbps 470.4 Mbps
FTP 506.4 Mbps 525.6 Mbps

We used a Western Digital 1TB 3.5" Green drive for the internal storage test.

 

USB Storage Throughput
  Read Write
SAMBA 304.8 Mbps 252.6 Mbps
FTP 349.6 Mbps 283.2 Mbps

Since the router uses USB 3.0, we connected a 3.5" USB 3.0 external hard drive. For both of the test, the drive was formatted to NTFS. We then transferred a 200MB data payload to the drive. From the results, it looks like writing data to the drive using FTP yield slightly higher speeds as compared to SAMBA.

 

2.4 GHz Wireless Throughput
Location A B C D E
2.4 GHz 20Mhz Downstream 65.2 Mbps 57.3 Mbps 49.6 Mbps 53.4 Mbps 68.5 Mbps
2.4 GHz 20Mhz Upstream 59.8 Mbps 44.5 Mbps 36.0 Mbps 41.6 Mbps 54.1 Mbps
2.4 GHz 40Mhz Downstream 67.5 Mbps 74.4 Mbps 82.6 Mbps 70.3 Mbps 75.8 Mbps
2.4 GHz 40Mhz Upstream 49.9 Mbps 57.1 Mbps 47.1 Mbps 49.8 Mbps 59.2 Mbps

From the results, it does not seem like there was a significant performance gain from the 20MHz and the 40MHz. At location C, the 40MHz did yield a better downstream performance.

 

5 GHz Wireless Throughput
Location A B C D E
5 GHz 20Mhz Downstream 106 Mbps 117 Mbps 104 Mbps 129 Mbps 112 Mbps
5 GHz 20Mhz Upstream 47.0 Mbps 83.4 Mbps 82.4 Mbps 91.4 Mbps 94.7 Mbps
5 GHz 40Mhz Downstream 187 Mbps 164 Mbps 172 Mbps 170 Mbps 151 Mbps
5 GHz 40Mhz Upstream 122 Mbps 121 Mbps 41.6 Mbps 80.1 Mbps 96.1 Mbps

Wireless throughput stayed consistent among the five locations. At location C, which has the most obstructed line-of-sight yields good results. The 5GHz band did have an overall performance gain of 55% as compared to the 2.4GHz band.