How to Fix ‘Realtek PCIe GBE Family Controller’ not Running at Full Speed?

Realtek is a Taiwan based semiconductor manufacturer and distributor. They have an extensive lineup of microchips that are used by a lot of modern computer manufacturers. Realtek also produces Network Adapter chips and they are integrated into a lot of new generation computers. Lately, there have been many complaints by users who are concerned that their Realtek PCIe GBE Family Controller is not running at the Full Speed supported by the router.

What Prevents the Realtek PCIe GBE Family Controller From Running at Full Speed?

After receiving numerous reports from multiple users, we decided to investigate the issue and devised a set of solutions that fixed it for most of our users. Also, we looked into the reasons due to which this issue is caused and listed them as follows.

  • Wrong Configuration: It is possible that the settings for the network adapter aren’t configured properly due to which the adapter is limited from achieving the full potential. It is important to configure the Advanced Adapter settings and allow the adapter to run at full speed.
  • Unsupported Ethernet Cable: It is important that the ethernet cable that you are using is capable of supporting the speed that you require on your computer. If the Ethernet cable is low grade, it won’t support the maximum bandwidth offered by the adapter.
  • Unsupported Adapter: It is vital that the adapter on your computer supports the speed exhibited by the router. If it doesn’t, the connection will run at the maximum speed that the adapter supports.

Now that you have an idea of the nature of the problem, we will move on towards the solutions. Make sure to implement these in the specific order in which they are provided.

Solution 1: Changing Configurations

Since the adapter needs to be configured to run at the maximum provided bandwidth, in this step, we will be changing some settings to support the maximum speed. For that:

  1. Press “Windows” + “R” to open the run prompt.
  2. Type in the following command and press “Enter“.
    ncpa.cpl
  3. Klik kanan pada adaptor yang Anda gunakan dan pilih "Properties".

    Catatan: Adaptor yang digunakan harus memiliki sinyal " Hijau ".

  4. Klik pada " tombol Konfigurasi " dan pilih Tab " Lanjutan ".
  5. Dalam daftar "Properties", klik opsi " Speed ​​and Duplex ".
  6. Pada menu tarik-turun " Nilai ", pilih opsi " Dupleks Penuh 1.0 Gbps ".

    Catatan: Jika opsi " 1.0 Gbps " tidak terdaftar, coba solusi kedua. Jika masih tidak menunjukkan 1,0 Gbps, itu berarti tidak didukung oleh adaptor atau router Anda.

  7. Periksa untuk melihat apakah masalah terus berlanjut.

Solusi 2: Memperbarui Perangkat Lunak.

Pada langkah ini, kami akan mengunduh dan menginstal Driver “Pengontrol Keluarga Realtek PCIe GBE” terbaru dari situs web Realtek dalam upaya mencapai kecepatan penuh yang didukung oleh router. Untuk itu:

  1. Klik tautan ini untuk menavigasi ke situs web.
  2. Pilih driver yang sesuai tergantung pada sistem operasi Anda.
  3. Setelah driver diunduh, klik file yang dapat dieksekusi dan ikuti petunjuk di layar untuk menginstalnya di komputer Anda.
  4. Setelah menginstal driver, periksa untuk melihat apakah masalah masih berlanjut.

Solusi 3: Mengganti Kabel

Salah satu alasan paling utama mengapa masalah ini dipicu adalah karena kurangnya kabel ethernet yang sesuai. Untuk mencapai kecepatan 1,0 Gbps, Anda memerlukan setidaknya kabel ethernet berperingkat " CAT 5e ". Coba kabel lain untuk membuat koneksi antara router dan komputer dan periksa untuk melihat apakah itu menyelesaikan masalah. Jika masalah masih berlanjut, beli kabel baru dan tanyakan secara khusus untuk kabel dengan rating " CAT 5e ".