Significant difference between PCs and internet Download speeds
I've got an interesting problem regarding download speeds between different PCs.
I have a desktop with an AMD A6 chip with a Realtek 8111F lan adapter on a BioStar motherboard running Win7. This machine at best and directly from the DSL modem can only download about 3Mbps on a 6Mbps DSL line and will frequently drop to under 1Mbps or even appear to stop downloading.
The DSL provider came out and after more than 2 hours of testing, consistently obtained 5+ Mbps which is pretty good considering distance from their DSL node. The DSL provider was also able to obtain through the wireless router a hair less than when directly hooked to the modem, which is to be expected.
I have 2 laptops, one running with an i5 chip running Win7 and the other an old dual core T2550 with Vista that also get 5Mbps when directly hooked to the modem.
The desktop Realtek driver was up to date so figuring the Realtek lan adapter may be the bottleneck; uninstalled the Realtek adapter and installed a new Intel network adapter and updated its driver but without effect on download speeds the desktop can obtain.
The slow download issues on the desktop still exist and I'm stumped looking for direction.
Typically run Firefox on the desktop but changing browsers to Chrome or IE makes no difference. The two laptops are also running Firefox. All machines are running MSE and the desktop also scans clean for virus, etc.