Part 1 — Giving an Old Platform a New GPU
The BitFenix Aegis had been one of my PCs for some time, but like many older systems, it gradually became less interesting as newer hardware appeared.
The platform itself was still perfectly usable. But instead of replacing it, I started wondering what would happen if I gave it a completely different role — and, more importantly, a surprisingly modern GPU.
The starting point was a Ryzen 5 2600 on an ASRock B450M-HDV, with 32 GB of RAM.
Then I found the component that made the experiment interesting:
an Intel Arc A750.
Why Arc?
My interest in Intel Arc started partly because of its unusual value proposition.
Depending on the workload, the A750 could get surprisingly close to the performance of an RTX 3060, while sometimes being available for almost half the price. I was also finding examples that were particularly attractive for an enthusiast project: cards still being sold with their original boxes and accessories, sometimes with warranty.
That made Arc unusual.
It was new enough to have modern features, but inexpensive enough that experimenting with it didn’t feel like a huge commitment.
The 3D performance was certainly interesting, but that wasn’t actually the most important reason I wanted one.
It was the media engine.
The Arc A750 has dedicated hardware for H.264, HEVC and AV1 encoding and decoding, along with two multi-format codec engines.
And AV1 was particularly interesting to me.
Hardware AV1 encoding was still a relatively unusual capability when I started looking at these cards. The combination of encoding speed, quality and the ability to handle multiple concurrent encoding workloads made Arc much more interesting for media applications than its gaming performance alone would suggest. Jellyfin also supports AV1 hardware encoding on Arc A-series GPUs.
This opened up a completely different possibility for the card.
The Original Plan: A Jellyfin Server
My first idea was actually to put the A750 into my file-server PC.
I wanted to use it primarily as an AV1 encoding accelerator for a Jellyfin server.
That made a lot of sense on paper. A file server already contains the media, and the Arc could provide extremely capable hardware transcoding without putting the workload on the CPU.
But there was one problem.
The file server doesn’t need to run Jellyfin all the time.
And if I put an A750 into that machine, most of the time its powerful 3D engine would simply be sitting there unused.
That seemed like a waste of a GPU that was interesting precisely because it could do much more than video encoding.
So I changed the plan.
Instead of dedicating the A750 to a server that would only occasionally need it, I moved it into one of my daily-use and gaming PCs.
Now the card could be useful for 3D workloads every day, while still being available for video encoding experiments when needed.
That turned out to be a much better use of the hardware.
ReBAR on an Old Platform
There was another reason I wanted to put the A750 into an older machine.
Resizable BAR.
Arc was designed around modern PCIe platforms and benefits from ReBAR. Intel recommends enabling it for optimal performance, and Jellyfin likewise recommends ReBAR for Arc A-series cards when the platform supports it.
But the B450 platform predates Intel Arc by several years.
That made the combination more interesting.
I wasn’t simply installing a new GPU into an old PC and checking whether it displayed an image. I wanted to see how much of the modern GPU experience could be brought to an older platform.
Could the Ryzen 5 2600 and B450 motherboard provide the features that a much newer system would normally be expected to provide?
Could an old platform make proper use of a modern GPU?
And could ReBAR actually be made useful on this generation of hardware?
That became part of the experiment itself.
The A750 does not require ReBAR to function, but it is recommended for better performance.
So the build became an interesting mixture of generations:
Ryzen 5 2600 + B450 + Intel Arc A750 + ReBAR.
None of these components were chosen as part of a conventional new PC build.
That was exactly what made the combination interesting.
More Than Just a GPU Upgrade
Once I decided that the Aegis would become a useful modern machine rather than simply an old PC with a new graphics card, other upgrades followed.
The storage consists of 1 TB NVMe and 1 TB SATA SSD.
The motherboard doesn’t need to be replaced just because NVMe is newer than the platform, so the modern storage was simply added to the existing system.
Networking received a similar treatment.
A 2.5 GbE network adapter provides a faster connection to the home network.
But I also wanted a direct connection to the file server.
The onboard Gigabit Ethernet port of the Aegis is connected directly to the file server, giving the two machines their own dedicated network path.
This is useful because it separates traffic between the two machines from the main network. Large file transfers can take place directly between the Aegis and the file server without depending on the rest of the home network.
There is also a direct 10 GbE connection to another PC, making the Aegis part of a small high-speed network environment rather than simply an isolated workstation.
So the networking arrangement itself reflects the way I wanted to use the machine: the Aegis can communicate with different systems at different speeds depending on what the workload requires.
Cooling the A750
The case also received a substantial cooling upgrade.
The Aegis now has:
- 3 × Scythe P12 Pro fans as front intake
- BitFenix Spectre fan as bottom intake
- BitFenix Spectre as rear exhaust
- A 240 mm radiator mounted at the top
The cooling isn’t just there for appearance.
The Arc A750 is a substantially more capable and power-hungry GPU than the kind of graphics card this older platform would originally have been paired with. Giving it plenty of airflow makes the old case capable of handling the new component properly.
It also fits another theme that appears in several of my builds: I don’t necessarily want to replace an old platform when I can make it do something new.
Reviving Rather Than Replacing
The Aegis project eventually became less about the A750 itself and more about the combination.
An older motherboard doesn’t necessarily have to remain locked into the capabilities of its own era.
A Ryzen 5 2600 isn’t a modern CPU, but it is still capable of hosting a modern GPU.
B450 isn’t a contemporary platform, but it can still provide a useful foundation for modern storage, networking and graphics.
And an Arc A750 doesn’t have to be assigned to a dedicated media server simply because its media engine is one of its most interesting features.
It can be a gaming GPU, a compute device and an AV1 encoder — sometimes all in the same project.
The most interesting part is that the machine wasn’t designed from scratch.
It evolved.
Instead of asking what the newest hardware could do, I started with an existing PC and asked a different question:
How much modern capability can I bring to an old platform before it stops being old?
That is what makes the Aegis more interesting to me than a conventional upgrade.
It isn’t a new PC.
It’s an old PC that refused to stay old.