The Cisco Catalyst 9500 Series is the first 100/40-Gbps switch purpose built for the enterprise campus. It was recognized as CRN's 2017 Overall Network Product of the Year.

1. Features of Cisco Catalyst 9500 Series Switches

The Cisco® Catalyst® 9500 Series switches are the next generation of enterprise-class core and aggregation layer switches, supporting full programmability and serviceability. Based on an x86 CPU, the Cisco Catalyst 9500 Series is Cisco’s lead purposebuilt fixed core and aggregation enterprise switching platform, built for security, IoT, and cloud. The switches come with a 4-core x86, 2.4-GHz CPU, 16-GB DDR4 memory, and 16-GB internal storage.

Cisco Catalyst 9500 series switches provides those models:

(1). Catalyst 9500 100/40-G 32-port switches

Figure 1. C9500-32C: Cisco Catalyst 9500 Series high-performance switch with 32x 100 Gigabit Ethernet

Figure 2. C9500-32QC: Cisco Catalyst 9500 Series high-performance switch with 32x 40 or 16x100 Gigabit Ethernet

• 32 ports of 100 G and 40 G with rich campus features

• Industry-first 100 G and 40 G enterprise-class switch

•High performance, QSFP+

•Secure segmentation with SD-Access

•MPLS L2/L3 VPNs, MVPN; flexible design templates

•Enhanced Limited Lifetime Warranty (E-LLW)

(2). Catalyst 9500 25-G 24- and 48-port switches

Figure 3. C9500-24Y4C: Cisco Catalyst 9500 Series high-performance switch with 24x 1/10/25G Gigabit Ethernet + 4x 40/100G Uplink 

Figure 4. C9500-48Y4C: Cisco Catalyst 9500 Series high-performance switch with 48x 1/10/25G Gigabit Ethernet + 4x 40/100G Uplink

•24 and 48 ports of 25 G with rich campus features

•Cisco innovation extending SR reach to 300 million

•High performance, SFP28

•Secure segmentation with SD-Access

•MPLS Level 2/3 VPNs, MVPN; flexible design templates

•Enhanced Limited Lifetime Warranty (E-LLW)

(3). Catalyst 9500 40-G 12- and 24-port switches

Figure 5. C9500-12Q: Cisco Catalyst 9500 Series switch with 12x 40G Gigabit Ethernet

Figure 6. C9500-24Q: Cisco Catalyst 9500 Series switch with 24x 40G Gigabit Ethernet

•32 ports of 40 G with rich campus features

•QSFP+, 10/40 G uplinks

•Secure segmentation with SD-Access

•MPLS Level 2/3 VPNs, MVPN; flexible design templates

•Enhanced Limited Lifetime Warranty (E-LLW)

(4). Catalyst 9500 1/10-G 16- and 40-port switches

 Figure 7. C9500-16X: Cisco Catalyst 9500 Series switch with 16x 1/10G Gigabit Ethernet

Figure 8. C9500-40X: Cisco Catalyst 9500 Series switch with 40x 1/10G Gigabit Ethernet

•16 to 40 ports of 1/10 G with rich campus features

•SFP/SFP+, 8 x 1/10 G or 2 x 40 G uplinks

•Secure segmentation with SD-Access

•MPLS Level 2/3 VPNs, MVPN; flexible design templates

•Enhanced Limited Lifetime Warranty (E-LLW)

2. Why upgrade to the Cisco Catalyst 9500 Series Switches?

Table 1. Benefits of upgrading to Cisco Catalyst 9500 Series Switches

Reference from

https://www.cisco.com/c/dam/en/us/products/collateral/switches/catalyst-9500-series-switches/nb-06-upgrading-cat-9500-fc-cte-en.pdf?dtid=osscdc000283

Hope it help.

By the way, you can check the price of Cisco Catalyst 9500 Series Switches.