I have the exact same GPU and have not just one but two Phenom II CPUs (920 x4 AM2+ and 565 x2 AM3 unlockable to x4) I can do more detailed and/or specific testing if you'd like, and I can go anywhere from like 1GB of RAM to 32GB of RAM.
It is however worth noting that the Phenom II came in many different clockspeed variations - they generally started at 2.5GHz but by the later models went all the way up to 3.7GHz.
Also note that the HD5450 is really weak for a discrete GPU - would you believe that even the cut-down variant of Haswell's integrated graphics found in the likes of the G3258 is actually faster than the HD5450? (at least with dual-channel DDR3-1600 and also tested on Linux). Also even the lowly HD4670 is miles faster than both (but it doesn't support ubershaders let alone Vulkan and, for its price of ~$10-$20, there are much newer Vulkan-capable GPUs or even entire CPUs with faster iGPUs - I'm particularly fond of LGA1150 Xeon CPUs, but keep in mind that some are 4c/4t instead of 4c/8t and not all models have integrated graphics)
It is however worth noting that the Phenom II came in many different clockspeed variations - they generally started at 2.5GHz but by the later models went all the way up to 3.7GHz.
Also note that the HD5450 is really weak for a discrete GPU - would you believe that even the cut-down variant of Haswell's integrated graphics found in the likes of the G3258 is actually faster than the HD5450? (at least with dual-channel DDR3-1600 and also tested on Linux). Also even the lowly HD4670 is miles faster than both (but it doesn't support ubershaders let alone Vulkan and, for its price of ~$10-$20, there are much newer Vulkan-capable GPUs or even entire CPUs with faster iGPUs - I'm particularly fond of LGA1150 Xeon CPUs, but keep in mind that some are 4c/4t instead of 4c/8t and not all models have integrated graphics)
Dolphin 5.0 CPU benchmark
CPU: Pentium G3258 @ 4.5GHz 1.24v
GPU: Intel integrated
RAM: 4x4GB Corsair Vengence @ DDR3-1600
OS: Linux Mint of some variety + [VM] Win7 SP1 x64
CPU: Pentium G3258 @ 4.5GHz 1.24v
GPU: Intel integrated
RAM: 4x4GB Corsair Vengence @ DDR3-1600
OS: Linux Mint of some variety + [VM] Win7 SP1 x64