G.Skill F5-6800J3445G32GX2-RS5K
The 64GB kit runs at 6800 MT/s with CL34 latency, tuned for Intel Z790 and 13th Gen Core CPUs via XMP 3.0. Its dual-channel 2x32GB layout and matte black heat spreader suit high-performance builds without ECC support. Best for gamers and workstation users needing large, fast memory for multitasking and content creation.
Snapshot
The 30-Second Version
Fast as hell, tons of RAM, zero RGB. Just don't overpay for it.
Pros & Cons
Pros
- Blistering 6800 MT/s speed 97th
- Massive 64GB capacity 90th
- No RGB, just clean matte black 88th
- Intel XMP 3.0 makes setup painless 73rd
Cons
- Price swings wildly between vendors
- No ECC support
- Tall-ish heat spreader may block some air coolers
- Server use is a hard pass
What owners think
The Word on the Street
The proof
Performance
The speed here is the headline. 6800 MT/s at CL34 is fast enough to make a real difference in memory-sensitive games and heavy workstation loads, and our data backs that up. It sits in the 97th percentile for speed, which is basically the top of the charts. The 64GB capacity is also a standout, giving you plenty of headroom for editing, rendering, or just having 200 Chrome tabs open without breaking a sweat.
Specifications
Full Specifications
Memory
| Type | DDR5 |
| Form Factor | UDIMM |
| Total Capacity | 65536 |
| Modules | 2 |
| Per Module | 32768 |
| Pins | 288 |
Performance
| Speed | 6800 |
| CAS Latency | 34 |
| Timings | 34-45-45-108 |
| Voltage | 1.4 |
Class
| ECC | No |
| Registered | No |
| OC Profile | Intel XMP 3.0 |
Features
| RGB | No |
| Heat Spreader | Yes |
vs Competition
Against the Kingston FURY Beast and Corsair VENGEANCE RGB, the G.Skill trades blows on speed but wins on capacity per dollar if you find a good price. The Corsair kit adds RGB if that's your thing, but you'll pay for it. The Crucial Pro Overclocking kit is a cheaper alternative, but it doesn't hit the same speed tier. If you want max frames and max RAM without the light show, the Ripjaws S5 is the pick.
| Spec | G.Skill F5-6800J3445G32GX2-RS5K | Kingston FURY Beast KF564C32BWEAK2-64 | Corsair VENGEANCE RGB CMH64GX5M2Y6400C32 | Crucial Pro Overclocking CP2K16G64C32U5B | KLEVV CRAS V RGB KD5BGUA80-60A300J | Patriot Viper Xtreme 5 S9145489 |
|---|---|---|---|---|---|---|
| Capacity | 64GB | 64GB | 64GB | 32GB | 64GB | 32GB |
| Kit | 2 x 32GB | 2 x 32GB | 2 x 32GB | 2 x 16GB | 2 x 32GB | 2 x 16GB |
| Memory Type | DDR5 | DDR5 | DDR5 | DDR5 | DDR5 | DDR5 |
| Speed Mts | 6800 | 6400 | 6400 | 6400 | 6000 | 8200 |
| Cas Latency | CL34 | CL32 | CL32 | CL32 | CL30 | CL38 |
| Form Factor | UDIMM | UDIMM | UDIMM | UDIMM | UDIMM | UDIMM |
| Ecc | false | false | false | false | false | true |
| Compare | Compare | Compare | Compare | Compare |
| Product | Speed | Feature | Latency | Capacity | Social Proof |
|---|---|---|---|---|---|
| G.Skill F5-6800J3445G32GX2-RS5K | 97.4 | 72.9 | 87.5 | 89.9 | 72 |
| Kingston FURY Beast KF564C32BWEAK2-64 Compare | 94.7 | 87 | 87.5 | 89.9 | 93.4 |
| Corsair VENGEANCE RGB CMH64GX5M2Y6400C32 Compare | 94.7 | 87 | 87.5 | 89.9 | 98.2 |
| Crucial Pro Overclocking CP2K16G64C32U5B Compare | 94.7 | 72.9 | 87.5 | 70.9 | 87.7 |
| KLEVV CRAS V RGB KD5BGUA80-60A300J Compare | 87.4 | 87 | 87.5 | 89.9 | 87.7 |
| Patriot Viper Xtreme 5 S9145489 Compare | 99.6 | 98.6 | 97.7 | 70.9 | 78 |
Price
Value & Pricing
Here's the thing: the price is all over the place. We saw listings from USD 1,784 to USD 3,000 in the US, and EUR 1,088 to EUR 3,027 across Europe. That's a massive spread. If you're paying anywhere near the top of that range, you're getting hosed. Shop around, and if you can snag it near the low end, it's a solid deal for this level of performance. Just don't pay a premium for the privilege.
Amazon 2 offers From $1,784
Price History
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Overview
This is a 64GB DDR5 kit that absolutely flies. We're talking 6800 MT/s with a CL34 latency, and in our database that puts it in the top tier for speed. If you're building a serious Z790 rig with a 13th Gen Intel chip and you want to skip the RGB circus, this is the kit to beat.
Common Questions
Q: Will this work with AMD Ryzen 7000 series?
It's designed and validated for Intel Z790 and 13th Gen or newer. It might boot on AMD with manual tuning, but you're better off with an EXPO kit for Ryzen.
Q: Is 6800 MT/s worth it over 6000 MT/s?
For gaming and memory-heavy work, yes. You'll see a real bump in minimum frame rates and render times. If you're just browsing and doing office work, save your money.
Q: Does this kit have RGB?
Nope. It's a clean matte black heat spreader. If you want lights, look at the Corsair VENGEANCE RGB or KLEVV CRAS V RGB.
Who Should Skip This
If you're building a server or a workstation that needs ECC memory, this isn't it. Go grab a proper ECC UDIMM kit instead. And if you're on a tight budget, the Crucial Pro Overclocking kit will get you most of the way there for less cash.
Verdict
If you're on Intel Z790 and want a no-nonsense 64GB kit that screams, buy this. It's fast, it's stable with XMP, and it looks clean. Just be smart about where you buy it, because the price variance is criminal.
