RX 7900 XT vs RX 7900 XTX
Within this lineup, the RX 7900 XT and the RX 7900 XTX are the two models people most often weigh against each other. The RX 7900 XTX has the edge in 2 of the 3 areas we looked at, most visibly in the gpu & performance category.
At a glance
- GPU & Performance RX 7900 XTX wins
- Memory RX 7900 XTX wins
- Power & Thermals RX 7900 XT wins
- Price RX 7900 XT wins
- GPU & Performance5.8
- Memory6.1
- Power & Thermals4.4
- GPU & Performance7.8
- Memory10.0
- Power & Thermals1.1
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 RX 7900 XTX has 19% more theoretical FP32 compute
When it comes to fp32 compute, the RX 7900 XTX wins comfortably with 61.4 TFLOPS against 51.6 TFLOPS. FP32 compute is a theoretical peak that combines shader count and clock speed, a quick way to size up raw power.
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The RX 7900 XTX has 4 GB more VRAM
A modest but measurable lead goes to the RX 7900 XTX: 24 GB compared with 20 GB. At high resolutions or with texture packs, running out of VRAM can hurt more than a small speed gap.
-
The RX 7900 XTX has 20% more memory bandwidth
It’s a lopsided result (960 GB/s for the RX 7900 XTX, 800 GB/s for the RX 7900 XT) and one of the main reasons to choose between them. The RX 7900 XTX has more bandwidth to work with, helping it hold up in memory-heavy games.
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The RX 7900 XTX has 14% more shader units
The RX 7900 XTX is slightly stronger on shader units. The gap, 6,144 versus 5,376, won’t change your life, but it isn’t nothing. The RX 7900 XTX’s extra shaders give it more raw muscle, although comparisons across different architectures aren’t one-to-one.
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The RX 7900 XT has 40 W lower board power
If everything else were equal, this small edge would favor the RX 7900 XT: 315 W against 355 W. Lower board power means less heat, quieter cooling and a smaller impact on your electricity bill.
Design & Size
- RX 7900 XT 10.87 in × 2.5 slots
- RX 7900 XTX 11.30 in × 2.5 slots
Size is a trade-off, not a score: the RX 7900 XTX is larger, the RX 7900 XT more compact.
Size & Connectivity
| Spec | RX 7900 XT | RX 7900 XTX |
|---|---|---|
| Reference card length | 10.87 in | 11.30 in |
| Slot width | 2.5 slots | 2.5 slots |
| Display outputs | 2x DisplayPort 2.1, 1x HDMI 2.1, 1x USB-C | 2x DisplayPort 2.1, 1x HDMI 2.1, 1x USB-C |
GPU & Performance
RX 7900 XTX leads
This is one of the RX 7900 XTX’s strongest areas. On gpu & performance, the RX 7900 XT falls well short. In its favor, the RX 7900 XTX has 19% more theoretical FP32 compute. The RX 7900 XTX has more theoretical compute, which often, but not always, translates into higher frame rates. The gpu & performance verdict goes to the RX 7900 XTX.
FP32 compute
RX 7900 XT: 51.6 TFLOPS RX 7900 XTX: 61.4 TFLOPS Architectures use their compute differently, so treat the gap as a guide and look at game benchmarks for the details.
Shader units
RX 7900 XT: 5,376 RX 7900 XTX: 6,144 Treat shader count as a strong hint about performance tier, then check benchmarks for the games you actually play.
Memory
RX 7900 XTX leads
The memory comparison is one-sided. The RX 7900 XTX leads where it counts. Point to the RX 7900 XTX for 4 GB more VRAM. Newer games tend to ask for more video memory, so the RX 7900 XTX’s extra VRAM helps the card age better. If this section decides it for you, choose the RX 7900 XTX.
VRAM
RX 7900 XT: 20 GB RX 7900 XTX: 24 GB More VRAM lets the card hold higher-resolution textures and bigger scenes without stutter.
Memory bandwidth
RX 7900 XT: 800 GB/s RX 7900 XTX: 960 GB/s Bandwidth needs vary by architecture, so compare it alongside VRAM and cache rather than on its own.
Features
This area doesn’t reduce to a single number. The table shows the features details for both, so you can judge what matters to you.
Power & Thermals
RX 7900 XT leads
In the power & thermals category, the RX 7900 XT is a step ahead rather than a leap ahead. The RX 7900 XT pulls ahead with 40 W lower board power. The RX 7900 XT draws less power, which makes it easier to cool in compact cases. Net result: the RX 7900 XT leads this part of the comparison.
Total board power
RX 7900 XT: 315 W RX 7900 XTX: 355 W Higher board power often comes with higher performance, so the RX 7900 XTX’s appetite may be part of the price of its speed.
Recommended PSU
RX 7900 XT: 750 W RX 7900 XTX: 800 W With the RX 7900 XT, you’re more likely to keep your existing power supply, which can save real money.
Full Specifications
GPU & Performance
| Spec | RX 7900 XT | RX 7900 XTX |
|---|---|---|
| Architecture | RDNA 3 | RDNA 3 |
| GPU die | Navi 31 | Navi 31 |
| Process | TSMC N5 (GCD) + N6 (MCD) chiplets | TSMC N5 (GCD) + N6 (MCD) chiplets |
| Shader units | 5,376 | 6,144 (winner) |
| Ray tracing units | 84 | 96 (winner) Most ray tracing units |
| Boost clock | 2,400 MHz | 2,500 MHz (winner) |
| FP32 computeTheoretical peak; AMD counts dual-issue, so compare within a brand only | 51.6 TFLOPS | 61.4 TFLOPS (winner) Most compute in class |
Memory
| Spec | RX 7900 XT | RX 7900 XTX |
|---|---|---|
| VRAM | 20 GB | 24 GB (winner) Most VRAM in class |
| Memory type | GDDR6 | GDDR6 |
| Memory bus | 320-bit | 384-bit (winner) |
| Memory bandwidth | 800 GB/s | 960 GB/s (winner) |
Features
| Spec | RX 7900 XT | RX 7900 XTX |
|---|---|---|
| Upscaling | FSR 3 | FSR 3 |
| Frame generation | FSR 3 Frame Generation, AFMF 2 | FSR 3 Frame Generation, AFMF 2 |
| PCIe interface | PCIe 4.0 x16 | PCIe 4.0 x16 |
Power & Thermals
| Spec | RX 7900 XT | RX 7900 XTX |
|---|---|---|
| Total board power | 315 W (winner) | 355 W |
| Recommended PSU | 750 W (winner) | 800 W |
| Power connector | 2x 8-pin | 2x 8-pin |
Size & Connectivity
| Spec | RX 7900 XT | RX 7900 XTX |
|---|---|---|
| Reference card length | 10.87 in | 11.30 in |
| Slot width | 2.5 slots | 2.5 slots |
| Display outputs | 2x DisplayPort 2.1, 1x HDMI 2.1, 1x USB-C | 2x DisplayPort 2.1, 1x HDMI 2.1, 1x USB-C |
Price
| Spec | RX 7900 XT | RX 7900 XTX |
|---|---|---|
| Launch price (MSRP) | $899 (winner) Lowest price in class | $999 |
“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 RX 7900 XT has a small price advantage of $100 at launch. Step up by $100 to the RX 7900 XTX and you gain 19% more theoretical FP32 compute and 4 GB more VRAM.
Launch prices in the US as of December 2022; street prices move, so check before you buy.
Which One Should You Buy?
Choose the RX 7900 XT if…
- you care about your power bill and a quieter case (315 W vs 355 W)
- you want to keep your current power supply (750 W vs 800 W recommended PSU)
- you don’t need the extras that cost $100 more
Choose the RX 7900 XTX if…
- you want more theoretical compute (61.4 TFLOPS vs 51.6 TFLOPS)
- you play at high resolutions with high-quality textures (24 GB vs 20 GB VRAM)
- you want more memory bandwidth (960 GB/s vs 800 GB/s)
- you want more raw GPU hardware (6,144 vs 5,376 shader units)
Also Compared
Frequently Asked Questions
Which is better for most people, the RX 7900 XT or the RX 7900 XTX?
We’d point most buyers to the RX 7900 XTX. The main exception is if what you want most is 40 W lower board power.
Which is larger, the RX 7900 XT or the RX 7900 XTX?
It’s the RX 7900 XTX that is larger: 11.30 in, versus 10.87 in for the RX 7900 XT.
Which is faster, the RX 7900 XT or the RX 7900 XTX?
The RX 7900 XTX should be the quicker of the two, with 19% more theoretical FP32 compute and 14% more shader units on its side.
Which costs less, the RX 7900 XT or the RX 7900 XTX?
The RX 7900 XTX launched at $100 more than the RX 7900 XT, based on prices as of December 2022.
Executive Summary
The RX 7900 XT and the RX 7900 XTX come from the same family, and honestly, that makes this one harder than a cross-brand fight. The biggest reason I lean toward the RX 7900 XTX is simple: it has 19% more theoretical FP32 compute. Plus, the RX 7900 XTX gets 4 GB more VRAM, which I wouldn’t overlook. The RX 7900 XT does have a strong card to play: 40 W lower board power.
Your priorities do the choosing here: power & thermals points to the RX 7900 XT, gpu & performance to the RX 7900 XTX.
My pick: the RX 7900 XTX for most people, with the RX 7900 XT as the smarter choice if you need 40 W lower board power, which only the RX 7900 XT offers.
Personal opinion based on the data above. Your priorities may differ.