DDR5 has been available since late 2021, but in 2026 many platforms still support DDR4. If you are building or upgrading a PC, choosing between DDR4 and DDR5 affects your motherboard choice, budget, and future upgrade path. This guide covers every key difference.
Speed & Bandwidth
DDR5 offers significantly higher data rates and bandwidth compared to DDR4, though real-world gains vary by workload.
| Specification | DDR4 | DDR5 |
|---|---|---|
| Base Speed (JEDEC) | 2133 MHz | 4800 MHz |
| Typical Speed (XMP/EXPO) | 3200-3600 MHz | 5600-6400 MHz |
| Maximum Speed | 5333 MHz | 8400+ MHz |
| Peak Bandwidth (dual channel) | ~57.6 GB/s | ~102.4 GB/s |
| Voltage | 1.2V (1.35V OC) | 1.1V (1.35V OC) |
| Pins (DIMM) | 288-pin | 288-pin (different keying) |
| Pins (SODIMM) | 260-pin | 262-pin |
| Max Module Size | 32GB (consumer) | 64GB+ (consumer) |
| On-die ECC | No | Yes |
| Channels per Module | 1 | 2 (32-bit sub-channels) |
Latency & Real-World Performance
While DDR5 has higher bandwidth, it also has higher CAS latency. DDR4 CL16 at 3200MHz has a first-word latency of ~10ns. DDR5 CL36 at 5600MHz has a similar ~12.9ns latency. In practice, gaming performance difference between DDR4-3600 and DDR5-5600 is typically 0-8% depending on the game and resolution. Productivity workloads like video editing, 3D rendering, and large dataset processing benefit more from DDR5 bandwidth.
- Gaming at 1440p/4K: 0-3% difference — GPU-bound scenarios show minimal benefit
- Gaming at 1080p (CPU-bound): 3-8% advantage for DDR5 in some titles
- Video editing (DaVinci Resolve, Premiere): 5-15% improvement with DDR5
- 3D rendering (Blender, V-Ray): 5-12% improvement with DDR5 bandwidth
- Compilation and development: 3-10% improvement with DDR5
- General office/browsing: No perceptible difference
Price & Value
DDR5 prices have dropped significantly since 2022 but still carry a premium over DDR4. As of early 2026, DDR4-3200 32GB (2x16GB) costs approximately £50-65 while DDR5-5600 32GB (2x16GB) costs approximately £70-90. The price gap has narrowed but DDR4 remains better value for budget builds. DDR5 makes more sense for new builds on current platforms that will benefit from the future upgrade path.
- DDR4 32GB kit: ~£50-65 — best value for budget and existing builds
- DDR5 32GB kit: ~£70-90 — worth the premium for new platforms
- DDR5 is the only option for Intel Core Ultra and AMD Ryzen 9000 series
- DDR4 platforms (Intel 12th/13th Gen, AMD AM4) remain excellent value
- Used DDR4 modules are widely available at very low prices
Which Should You Buy in 2026?
Your choice depends on your platform and priorities:
- New build with Intel Core Ultra or AMD Ryzen 9000: DDR5 is your only option
- New build with Intel 12th/13th Gen or AMD AM4: DDR4 saves money with minimal performance loss
- Upgrading an existing DDR4 system: Stick with DDR4 — you cannot switch without a new motherboard and CPU
- Future-proofing: DDR5 platforms have longer upgrade paths as DDR4 is end-of-life
- Productivity/workstation: DDR5 bandwidth advantages are worth the premium
- Budget gaming: DDR4-3600 CL16 is still excellent for gaming and costs less
Recommended Products
Best all-round DDR5 kit. Intel XMP 3.0 and AMD EXPO certified. Low-profile design fits most coolers.
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Reliable DDR4 kit with XMP profiles. Excellent value for DDR4 platform upgrades.
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Premium DDR5 kit optimised for AMD EXPO. Great for Ryzen 7000/9000 builds.
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Frequently Asked Questions
Can I use DDR5 RAM in a DDR4 motherboard?
No. DDR4 and DDR5 are physically incompatible. They have different pin configurations and keying notches. You need a DDR5-compatible motherboard and CPU to use DDR5 memory.
Is DDR5 worth it for gaming?
For new builds on DDR5-only platforms, yes — it is your only option and performs excellently. For existing DDR4 systems, upgrading to DDR5 requires a new motherboard and CPU, making it a poor value proposition for the 0-8% gaming improvement.
Will DDR4 become obsolete?
DDR4 is entering its end-of-life phase but will remain usable for years. No new platforms support DDR4, but existing DDR4 systems (Intel 12th/13th Gen, AMD AM4) are still very capable for gaming and productivity in 2026.
Does DDR5 have better reliability?
DDR5 includes on-die ECC (Error Correcting Code) which corrects single-bit memory errors automatically. This is not full ECC like server memory, but it does improve baseline reliability compared to DDR4.
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Prices from PCHub.UK via ComputersDeal. As an affiliate, we may earn from qualifying purchases. Prices updated 2026-04-10 08:16:07.