The Cisco 3825 are indeed End of Life and was directly replaced by 3900 ISRs. However, it is good that you are already looking at ASR for scalability. There are also the ASR 1002 and 1002-X if you are looking at 5Gbs out of the box. Check this link for more details:

Cisco 3845 Integrated Services Router - router - desktop Cisco 3845 Integrated Services Router - router - desktop Series Specs & Prices. Model Cisco 3845 - router - desktop Cisco 3845 - router - desktop CISCO3845 $642.64. Cisco CISCO 3825 DATASHEET PDF - Pinards PDF Jun 14, 2019 Unusual access | DSLReports, ISP Information FAQ: Unusual access. This IP address 52.175.237.137 has been blocked for unusual usage patterns

Cisco 1801 Integrated Services Router - router - ISDN/DSL

Cisco 3800 Series Integrated Services Routers 3D cisco 3825 and cisco 3845 Cisco Systems ® , Inc. is redefining best-in-class enterprise routing with a new portfolio of Integrated Services Routers optimized for secure, wire-speed delivery of concurrent data, voice, video, and wireless services. Cisco 3800 Series Routers Models Comparison 3825 3845 Cisco 3800 Series Routers Models Comparison 3825 3845 routers

Cisco ISR 1 routers VS Cisco ISR 2 routers CPU comparison: Cisco 1841 VS Cisco 1921, Cisco 1941 VS Cisco 1841, Cisco 2901 VS Cisco 2801, Cisco 2911 VS Cisco 2811, Cisco 2921 VS Cisco 2821, Cisco 2951 VS Cisco 2851, Cisco 3925 VS Cisco 3825, more details at the following table:

cisco 3825 and cisco 3845 Cisco Systems ® , Inc. is redefining best-in-class enterprise routing with a new portfolio of Integrated Services Routers optimized for secure, wire-speed delivery of concurrent data, voice, video, and wireless services. Cisco 1841 ISR Cisco 2811 ISR Cisco 3825 ISR Cisco 7206 Router Cisco 7301 Router Cisco 7606 Router Test Parameters In conducting this test, a range of IP traffic was injected into the Device Under Test (DUT) via an independent test tool using a pair of Ethernet interfaces on the DUT. To provide Cisco 3825 Integrated Services Router IOS Software. For the following router: CISCO3825: 3825 w/AC PWR, 2GE,1SFP, 2NME, 4HWIC, IP Base, 64F/256D: CISCO3825-AC-IP: maximum packet size and presented as a throughput test. Results are delivered as megabits per second (Mbps). This test yields a maximum data-rate forwarding of specific features. Table 1. Cisco ISR G2 RFC 2544-Based Performance (kpps and Mbps) Platform Cisco 860 Cisco 880 Cisco 890 Cisco 1921 Cisco 1941 Cisco 2901 Cisco 2911 Cisco 2921 Cisco 2951 Discuss: Cisco 3825 - router - desktop Sign in to comment. Be respectful, keep it civil and stay on topic. We delete comments that violate our policy, which we encourage you to read.Discussion Cisco ® 3900 Series builds on the best-in-class offering of the existing Cisco 3800 Series Integrated Services Routers by offering two platforms (Figure 1): the Cisco 3925 and the Cisco 3945 Integrated Services Routers. Both Cisco 3900 Series Integrated Services Routers offer embedded hardware encryption acceleration, voice- and