RTX 4080 vs RTX 5080: Is the Upgrade Worth It?
Think of the RTX 5080 as the next take on the RTX 4080: same idea, updated hardware. Scoring each area separately, the RTX 5080 comes out on top 2 times out of 3. Its lead is sharpest in gpu & performance. Money matters here as well, since the RTX 4080 started out $200 above the RTX 5080.
At a glance
- GPU & Performance RTX 5080 wins
- Memory RTX 5080 wins
- Power & Thermals RTX 4080 wins
- Price RTX 5080 wins
- GPU & Performance7.2
- Memory2.9
- Power & Thermals4.1
- GPU & Performance8.9
- Memory5.3
- Power & Thermals0.0
Spec scores (0 to 10) are calculated from manufacturer specs against other models in the same class. See how the formula works. They are not reviews or user ratings.
Key Differences
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The RTX 5080 has 16% more theoretical FP32 compute
The RTX 5080 doesn’t just edge this one; 56.3 TFLOPS against 48.7 TFLOPS is a lead you’ll feel. The RTX 5080 has more theoretical compute, which often, but not always, translates into higher frame rates.
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The RTX 5080 has 34% more memory bandwidth
Big gap, real consequences. The RTX 5080’s 960 GB/s versus the RTX 4080’s 717 GB/s changes how the two compare in daily use. The RTX 5080 has more bandwidth to work with, helping it hold up in memory-heavy games.
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The RTX 4080 has 40 W lower board power
It’s a fine margin, and it favors the RTX 4080 (320 W versus 360 W). The RTX 4080 draws less power, which makes it easier to cool in compact cases.
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The RTX 5080 has 11% more shader units
The RTX 5080 gets a small bonus on shader units, with 10,752 against the RTX 4080’s 9,728. The RTX 5080’s extra shaders give it more raw muscle, although comparisons across different architectures aren’t one-to-one.
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The RTX 4080 has
We don’t score this one. The RTX 4080 lists 3 slots and the RTX 5080 2 slots, and the better choice depends on your needs. A thicker card takes up more expansion slots and can block neighboring PCIe slots.
Design & Size
- RTX 4080 11.97 in × 3 slots
- RTX 5080 11.97 in × 2 slots
If you’re worried about fit, relax: either card occupies roughly the same footprint.
Size & Connectivity
| Spec | RTX 4080 | RTX 5080 |
|---|---|---|
| Reference card length | 11.97 in | 11.97 in |
| Slot width | 3 slots | 2 slots |
| Display outputs | 3x DisplayPort 1.4a, 1x HDMI 2.1 | 3x DisplayPort 2.1b, 1x HDMI 2.1b |
GPU & Performance
RTX 5080 leads
For gpu & performance, the verdict is easy: the RTX 5080 leads, and not by a little. The RTX 5080 adds 16% more theoretical FP32 compute. Architectures use their compute differently, so treat the gap as a guide and look at game benchmarks for the details. The takeaway: on gpu & performance, the RTX 5080 is the stronger card.
FP32 compute
RTX 4080: 48.7 TFLOPS RTX 5080: 56.3 TFLOPS FP32 compute is a theoretical peak that combines shader count and clock speed, a quick way to size up raw power.
Shader units
RTX 4080: 9,728 RTX 5080: 10,752 Shader units do most of the heavy lifting in games, so more of them usually means more frames per second within the same architecture.
Memory
RTX 5080 leads
The RTX 4080 is outclassed on memory; the RTX 5080 leads by a clear margin. Here the RTX 5080 offers 34% more memory bandwidth. Bandwidth needs vary by architecture, so compare it alongside VRAM and cache rather than on its own. For anyone who cares most about memory, the RTX 5080 is the safer choice.
Memory bandwidth
RTX 4080: 717 GB/s RTX 5080: 960 GB/s Memory bandwidth decides how quickly the GPU can feed itself with data, which matters most at 1440p and 4K.
Features
We don’t score this area directly, because the features specs are labels rather than measurements. The table shows what each lists.
Power & Thermals
RTX 4080 leads
The RTX 5080 keeps it close on power & thermals, yet the RTX 4080 holds a small lead. The RTX 4080 takes this one with 40 W lower board power. Higher board power often comes with higher performance, so the RTX 5080’s appetite may be part of the price of its speed. Net result: the RTX 4080 leads this part of the comparison.
Total board power
RTX 4080: 320 W RTX 5080: 360 W Lower board power means less heat, quieter cooling and a smaller impact on your electricity bill.
Recommended PSU
RTX 4080: 750 W RTX 5080: 850 W With the RTX 4080, you’re more likely to keep your existing power supply, which can save real money.
Full Specifications
GPU & Performance
| Spec | RTX 4080 | RTX 5080 |
|---|---|---|
| Architecture | Ada Lovelace | Blackwell |
| GPU die | AD103 | GB203 |
| Process | TSMC 4N | TSMC 4N |
| Shader units | 9,728 | 10,752 (winner) Most shader units |
| Ray tracing units | 76 | 84 (winner) |
| Base clock | 2,205 MHz | 2,295 MHz (winner) |
| Boost clock | 2,505 MHz | 2,617 MHz (winner) Highest boost clock |
| FP32 computeTheoretical peak; AMD counts dual-issue, so compare within a brand only | 48.7 TFLOPS | 56.3 TFLOPS (winner) |
Memory
| Spec | RTX 4080 | RTX 5080 |
|---|---|---|
| VRAM | 16 GB | 16 GB |
| Memory type | GDDR6X | GDDR7 |
| Memory bus | 256-bit | 256-bit |
| Memory bandwidth | 717 GB/s | 960 GB/s (winner) |
Features
| Spec | RTX 4080 | RTX 5080 |
|---|---|---|
| Upscaling | DLSS Super Resolution | DLSS 4 Super Resolution |
| Frame generation | DLSS Frame Generation (2x) | DLSS 4 Multi Frame Generation (up to 4x) |
| PCIe interface | PCIe 4.0 x16 | PCIe 5.0 x16 |
Power & Thermals
| Spec | RTX 4080 | RTX 5080 |
|---|---|---|
| Total board power | 320 W (winner) | 360 W Most power-hungry in class |
| Recommended PSU | 750 W (winner) | 850 W Biggest PSU requirement |
| Power connector | 1x 16-pin (12VHPWR) | 1x 16-pin (12V-2x6) |
Size & Connectivity
| Spec | RTX 4080 | RTX 5080 |
|---|---|---|
| Reference card length | 11.97 in | 11.97 in |
| Slot width | 3 slots | 2 slots |
| Display outputs | 3x DisplayPort 1.4a, 1x HDMI 2.1 | 3x DisplayPort 2.1b, 1x HDMI 2.1b |
Price
| Spec | RTX 4080 | RTX 5080 |
|---|---|---|
| Launch price (MSRP) | $1,199 | $999 (winner) |
“N/A” means the manufacturer does not specify the value or we could not confirm it. Figures marked “manufacturer rating” are the maker’s own claims, not our measurements.
Price & Value
The price gap is wide: $200 at launch, which is 20% of difference between the RTX 5080 and the RTX 4080. The RTX 5080 delivers more for less: $200 less, to be exact.
All prices are official US launch prices, last checked January 2025. Actual prices at stores may differ.
Which One Should You Buy?
Choose the RTX 4080 if…
- you want lower power draw and less heat (320 W vs 360 W board power)
- you’re building on a modest power supply (750 W vs 850 W)
- you’d rather not pay for improvements you won’t use
Choose the RTX 5080 if…
- you run compute-heavy work alongside gaming (56.3 TFLOPS vs 48.7 TFLOPS FP32)
- you game at high resolutions where bandwidth matters (960 GB/s vs 717 GB/s)
- you want more shader units working on every frame (10,752 vs 9,728)
- you want more dedicated ray tracing hardware (84 vs 76)
- you want the lower price and can live with the trade-offs ($200 less)
Also Compared
Frequently Asked Questions
Should I buy the RTX 4080 or the RTX 5080?
The RTX 5080 makes more sense overall. Consider the alternative only if you’re on the RTX 4080 and nothing about it bothers you.
Should I upgrade from the RTX 4080 to the RTX 5080?
If those changes matter to you, yes: the RTX 5080 adds 16% more theoretical FP32 compute, 34% more memory bandwidth and 11% more shader units compared with the RTX 4080.
Which is larger, the RTX 4080 or the RTX 5080?
The RTX 4080 and the RTX 5080 are so close in size that you’d struggle to tell them apart on dimensions alone.
Does the RTX 4080 perform better than the RTX 5080?
The RTX 5080 should be the quicker of the two, with 16% more theoretical FP32 compute and 11% more shader units on its side.
Which costs less, the RTX 4080 or the RTX 5080?
At launch, the RTX 5080 undercut the RTX 4080 by $200. These figures are as of January 2025, and street prices can change.
Executive Summary
Old versus new: the RTX 4080 against its replacement, the RTX 5080. Here’s my read. Practically speaking, the RTX 5080’s biggest advantage is 16% more theoretical FP32 compute. Nor should you ignore that the RTX 5080 has 34% more memory bandwidth. I don’t want to sell the RTX 4080 short, though: it has 40 W lower board power.
Fit matters more than scores here. The RTX 4080 suits buyers focused on power & thermals; the RTX 5080 suits those focused on gpu & performance.
My pick: the RTX 5080 for new buyers, while owners of the RTX 4080 can probably sit this generation out.
Personal opinion based on the data above. Your priorities may differ.