Intel Pentium Gold G6400 + NVIDIA GTX 660 Bottleneck Analysis
The NVIDIA GTX 660 is the limiting component with the Intel Pentium Gold G6400 (roughly 11-15% at 1440p) - that is the healthy direction for gaming, and the CPU has headroom for a future GPU upgrade.
Balance across resolutions
1080p
Balanced
1440p
GPU 11-15%
4K
GPU 15-19%
Benchmark data updated July 2026 · prices sync daily from retail feeds · how we score
Component scores below are out of 100 on our gaming-performance scale, weighted by how much each resolution leans on the CPU vs the GPU - the closer the two weighted scores, the more balanced the pairing.
1080p (Full HD)
Well BalancedEstimated AAA Game FPS
Based on gaming scores. Actual FPS varies by title.perfperformance
13
FPS
balancedbalanced
10
FPS
ultraultra
8
FPS
Great pairing! The Intel Pentium Gold G6400 and NVIDIA GTX 660 are well-matched at 1080p (Full HD). Both components will be utilized efficiently with minimal performance waste. This is an ideal combination for this resolution.
1440p (Quad HD)
Moderate GPU Bottleneck (11-15%)Limiting factor at this resolution
Estimated AAA Game FPS
Based on gaming scores. Actual FPS varies by title.perfperformance
10
FPS
balancedbalanced
7
FPS
ultraultra
5
FPS
At 1440p (Quad HD), the NVIDIA GTX 660 will hold back the Intel Pentium Gold G6400 by roughly 11-15% depending on the game. At 1440p the GPU carries most of the workload, and your graphics card is the limiting factor. Upgrading your GPU would provide the biggest performance improvement at this resolution.
4K (Ultra HD)
Moderate GPU Bottleneck (15-19%)Limiting factor at this resolution
Estimated AAA Game FPS
Based on gaming scores. Actual FPS varies by title.perfperformance
6
FPS
balancedbalanced
4
FPS
ultraultra
3
FPS
At 4K (Ultra HD), the NVIDIA GTX 660 will hold back the Intel Pentium Gold G6400 by roughly 15-19% depending on the game. At 4K the GPU carries most of the workload, and your graphics card is the limiting factor. Upgrading your GPU would provide the biggest performance improvement at this resolution.
Will it run the games you play?
Pick your games for an estimated FPS at 1440p, high settings.
Valorant
40-54FPS
Playable
Counter-Strike 2
31-41FPS
Playable
Fortnite
Balanced settings, no Lumen
17-23FPS
Struggles
Marvel Rivals
16-22FPS
Struggles
Call of Duty: Warzone
9-13FPS
Struggles
These are estimates, not benchmarks. Your actual frame rate depends on your exact settings, resolution scaling, drivers, and the scene on screen - treat these as a realistic ballpark at high settings, not a guarantee. Lower settings or upscaling (DLSS/FSR) push them higher; maxed-out ray tracing pushes them lower.
Intel Pentium Gold G6400 + NVIDIA GTX 660
We do not recommend buying every part in this pairing today - the ones worth buying link out to retailers, and the rest point to current alternatives instead:
CPU · Score 20/100
Intel Pentium Gold G6400
LGA1200 · 58W TDP
GPU · Score 6/100
NVIDIA GTX 660
2GB VRAM · 140W TDP · used / remaining stock
The NVIDIA GTX 660 is discontinued - its price is an estimate of the used / remaining-stock market, not current new-retail.
Recommended Upgrades
Cost per frame uses today's prices and the estimated AAA FPS gain at 1440p - lower is better value.
★ Best Value · GPU Upgrade · +~17 FPS · ~$3/frame
AMD RX 580 2048SPScore: 20/100 · 8GB VRAM · 150W TDP
Specs Comparison
| Spec | Intel Pentium Gold G6400 | NVIDIA GTX 660 |
|---|---|---|
| Gaming Score | 20/100 | 6/100 |
| Benchmark Score | 14 | 5 |
| TDP | 58W | 140W |
| Price | Not recommended | Not recommended |
| Socket / VRAM | LGA1200 | 2GB |
| Release Year | 2020 | 2012 |
Finish the Build
You picked the Intel Pentium Gold G6400 + NVIDIA GTX 660 - these tools answer the next two questions with this exact pairing already filled in:
Complete the Setup
Core's sorted with the Intel Pentium Gold G6400 + NVIDIA GTX 660. Here's the gear that actually changes how it feels to play:
Explore Related Pairings
Frequently Asked Questions
Is the Intel Pentium Gold G6400 a bottleneck for the NVIDIA GTX 660?
The NVIDIA GTX 660 is the limiting factor at 1440p (a bottleneck of roughly 11-15% depending on the game). The Intel Pentium Gold G6400 has more headroom than the GPU can use.
What resolution is best for the Intel Pentium Gold G6400 + NVIDIA GTX 660?
The Intel Pentium Gold G6400 and NVIDIA GTX 660 are most balanced at 1080p with only a 8% bottleneck. At 1080p, bottleneck is 8%. At 1440p, it's 13%. At 4K, it's 17%.
Should I upgrade from the Intel Pentium Gold G6400 or NVIDIA GTX 660?
Upgrade the GPU. The NVIDIA GTX 660 is the bottleneck. A faster GPU will give you the biggest performance improvement.
Want to test other parts? Use our free bottleneck calculator to compare any CPU and GPU pair.