暗号化ハードウェア

AMD N36L（HP ProLiant MicroServer N36L）がインストールされているサーバーがあります。うまく動作しますが、1Gbpsネットワークデータとフルディスク暗号化を暗号化するのは遅すぎます。

$ openssl speed aes-256-cbc
The 'numbers' are in 1000s of bytes per second processed.
type             16 bytes     64 bytes    256 bytes   1024 bytes   8192 bytes  16384 bytes
aes-256 cbc      44377.97k    47345.83k    48251.48k    48544.09k    48589.48k    48658.84k

カーネルが暗号化のために自動的に検出できるように、どのようなアドオンカードをシステムに挿入できますか？私は無料ではなくモジュールを気にしたくありません。

グラフィックカードだけを追加できますか？ https://developer.nvidia.com/gpugems/gpugems3/part-vi-gpu-computing/chapter-36-aes-encryption-and-decryption-gpu

$ lscpu
Architecture:                    x86_64
CPU op-mode(s):                  32-bit, 64-bit
Byte Order:                      Little Endian
Address sizes:                   48 bits physical, 48 bits virtual
CPU(s):                          2
On-line CPU(s) list:             0,1
Thread(s) per core:              1
Core(s) per socket:              2
Socket(s):                       1
NUMA node(s):                    1
Vendor ID:                       AuthenticAMD
CPU family:                      16
Model:                           6
Model name:                      AMD Athlon(tm) II Neo N36L Dual-Core Processor
Stepping:                        3
CPU MHz:                         1300.000
CPU max MHz:                     1300.0000
CPU min MHz:                     800.0000
BogoMIPS:                        2595.51
Virtualization:                  AMD-V
L1d cache:                       128 KiB
L1i cache:                       128 KiB
L2 cache:                        2 MiB
NUMA node0 CPU(s):               0,1
Vulnerability Itlb multihit:     Not affected
Vulnerability L1tf:              Not affected
Vulnerability Mds:               Not affected
Vulnerability Meltdown:          Not affected
Vulnerability Spec store bypass: Not affected
Vulnerability Spectre v1:        Mitigation; usercopy/swapgs barriers and __user pointer s
                                 anitization
Vulnerability Spectre v2:        Mitigation; Full AMD retpoline, STIBP disabled, RSB filli
                                 ng
Vulnerability Srbds:             Not affected
Vulnerability Tsx async abort:   Not affected
Flags:                           fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca 
                                 cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mm
                                 xext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_t
                                 sc rep_good nopl nonstop_tsc cpuid extd_apicid pni monito
                                 r cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy a
                                 bm sse4a 3dnowprefetch osvw ibs skinit wdt nodeid_msr hw_
                                 pstate vmmcall npt lbrv svm_lock nrip_save