Hi Everyone - My Xfinity download speed was increased from 1000 to 1200mbps, but I'm not realizing the gain. Is there a Netgear CM2050V modem setting change required, or firmware upgrade I need? Thanks for any direction you can provide, Allan

adlewis1 wrote:Hi Everyone - My Xfinity download speed was increased from 1000 to 1200mbps, but I'm not realizing the gain. Is there a Netgear CM2050V modem setting change required, or firmware upgrade I need? Thanks for any direction you can provide, AllanNo modem setting or change required. Did you restart your network, modem first then the router after the modem had fully booted? How are you testing your throughput? With a device connected via Wi-Fi or through an Ethernet cable? Recommend you use the Ookla stand alone test application that is available from the play store. What is the brand name and model number of the router you have connected to your CM2050V?

Thanks for your reply, Kitsap. I did restart the modem and router, but concurrently. I'll try again in the sequence you suggest. The device that's not reflecting increased speed is my DT connected to the router via ethernet cable.Interesting that wireless devices are showing increases. I am using Ookla. But thanks for that suggestion. Netgear Router -NightHawkAX6 AX5400Model: RAX50v2

adlewis1 wrote:Thanks for your reply, Kitsap. I did restart the modem and router, but concurrently. I'll try again in the sequence you suggest. The device that's not reflecting increased speed is my DT connected to the router via ethernet cable.Interesting that wireless devices are showing increases. I am using Ookla. But thanks for that suggestion. Netgear Router -NightHawkAX6 AX5400Model: RAX50v2 Is the Ethernet port on your desktop computer rated at 1 Gbps? That could be your bottleneck, or possibly a bad/old Ethernet cable. The Ethernet output ports on your router are rated at 1 Gbps. In real life, most 1 Gbps rated Ethernet ports will transfer data at around 920-940 Mbps. The Ookla stand alone application gets good results, an Ookla web site via a web browser does not.

Id check to see if Protection Engine is enabled on your RAX50v2, newest FW has this feature. Disable it and re-test. adlewis1 wrote: Thanks for your reply, Kitsap. I did restart the modem and router, but concurrently. I'll try again in the sequence you suggest. The device that's not reflecting increased speed is my DT connected to the router via ethernet cable. Interesting that wireless devices are showing increases. I am using Ookla. But thanks for that suggestion. Netgear Router - NightHawkAX6 AX5400 Model: RAX50v2

Kitsap - My DT is 5 yrs old and has the following ethernet network card installed, and you're correct, rated at 1gbps!"killer e2400 gigabit" So, yes, this is my bottleneck. Can a firmware patch be applied to support faster downloads, or should I replace the ethernet control card? -Allan

Xfinity download speed compatibility with Netgear modem CM2050V

13 Replies

Kitsap
Master
Mar 09, 2025
adlewis1 wrote:
Hi Everyone -
My Xfinity download speed was increased from 1000 to 1200mbps, but I'm not realizing the gain.

Is there a Netgear CM2050V modem setting change required, or firmware upgrade I need?

Thanks for any direction you can provide,
Allan
No modem setting or change required. Did you restart your network, modem first then the router after the modem had fully booted?

How are you testing your throughput? With a device connected via Wi-Fi or through an Ethernet cable?

Recommend you use the Ookla stand alone test application that is available from the play store.

What is the brand name and model number of the router you have connected to your CM2050V?
- adlewis1
  Aspirant
  Mar 10, 2025
  Thanks for your reply, Kitsap.
  
  I did restart the modem and router, but concurrently. I'll try again in the sequence you suggest.
  
  The device that's not reflecting increased speed is my DT connected to the router via ethernet cable.
  Interesting that wireless devices are showing increases.
  
  I am using Ookla. But thanks for that suggestion.
  
  Netgear Router -
  NightHawkAX6
  AX5400
  Model: RAX50v2
  - Kitsap
    Master
    Mar 10, 2025
    adlewis1 wrote:
    Thanks for your reply, Kitsap.
    
    I did restart the modem and router, but concurrently. I'll try again in the sequence you suggest.
    
    The device that's not reflecting increased speed is my DT connected to the router via ethernet cable.
    Interesting that wireless devices are showing increases.
    
    I am using Ookla. But thanks for that suggestion.
    
    Netgear Router -
    NightHawkAX6
    AX5400
    Model: RAX50v2
    Is the Ethernet port on your desktop computer rated at 1 Gbps? That could be your bottleneck, or possibly a bad/old Ethernet cable.
    
    The Ethernet output ports on your router are rated at 1 Gbps.
    
    In real life, most 1 Gbps rated Ethernet ports will transfer data at around 920-940 Mbps.
    
    The Ookla stand alone application gets good results, an Ookla web site via a web browser does not.

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Xfinity download speed compatibility with Netgear modem CM2050V