How much VRAM is enough?

How much VRAM do you need?

8GB of VRAM is enough for 1080p gaming without ray tracing in 2026, 12GB is the floor for 1440p, and 16GB is the amount to buy for ray tracing, 4K or a card kept four years. Tom's Hardware's GPU hierarchy (June 2026) puts the 16GB versions of the RTX 5060 Ti and RX 9060 XT only 4.8% to 5.5% ahead of the 8GB versions at 1080p, but 46.2% to 53.5% ahead at 1440p with ray tracing.

The cheapest 16GB card in this guide is the PowerColor Radeon RX 9060 XT Reaper 16GB at £479.99 on Amazon UK at the time of writing (October 2026), £39.00 less than PowerColor's own 8GB Reaper. The ranked field is in Best graphics card UK 2026, and the 8GB budget decision in RTX 5060 vs RX 9060 XT.

How much faster is a 16GB graphics card than 8GB?

At 1080p without ray tracing, a 16GB card is about 5% faster than the same card with 8GB; with ray tracing at 1440p, it is about 50% faster. The RTX 5060 Ti and RX 9060 XT each come in 8GB and 16GB versions with the same GPU and the same 128-bit memory bus, so the gap between each pair comes from memory alone. Figures are Tom's Hardware's averages on a Ryzen 7 9800X3D at high and ultra settings.

The pattern holds on both brands: the gap grows with resolution and with ray tracing, because both raise the memory a game needs. When an 8GB card runs out, it borrows system memory over the PCIe bus, which is far slower than its own GDDR memory. At 4K with ray tracing the 8GB RTX 5060 Ti averages 7.2 fps against 20.6 fps for the 16GB card. Tom's Hardware names the RTX 5060 Ti 16GB, RTX 5070 and RX 9070 GRE, all 12GB or more, as the cards that hold about 60 fps with ray tracing at 1080p "without running out of VRAM".

What does the extra 8GB of VRAM cost?

On Amazon UK at the time of writing (October 2026), the extra 8GB costs £81.12 to £82.00 on a Radeon RX 9060 XT and £230.00 to £320.00 on a GeForce RTX 5060 Ti. Each pair below has the same maker and model line, so memory is the only difference; the last column divides the price gap by 8.

The RTX 5060 Ti charges nearly four times more per gigabyte than the RX 9060 XT, and Tom's Hardware calls the 16GB model "hopelessly overpriced for the performance it offers in mid-2026". PowerColor's pricing runs the other way: the 16GB Reaper costs £39.00 less than the 8GB Reaper. The cross-model row is the real choice for most buyers: £108.00 separates the PNY RTX 5060 Ti 8GB, faster in raster, from the PowerColor RX 9060 XT 16GB, which keeps 31.0 fps at 1440p with ray tracing against 26.6 fps.

Is 12GB of VRAM enough?

12GB is enough for 1440p without heavy ray tracing, and short for 1440p ray tracing or 4K. The 12GB Gigabyte Radeon RX 9070 GRE Gaming OC averages 86.6 fps at 1440p ultra in Tom's Hardware's hierarchy for £529.99, but Tom's Hardware says its 12GB "quickly becomes a liability at 1440p" with ray tracing against the 16GB RX 9070. The 12GB RTX 5070 sits in the same band; the full 1440p card list is in What graphics card do I need for 1440p?.

VRAM and system RAM are separate budgets. A PC with an 8GB graphics card still needs 16GB of system memory, and adding RAM does not fix a VRAM shortfall; the system memory side is covered in Is 16GB RAM enough for gaming? and Is 8GB RAM enough?.

Which 16GB graphics card should you buy?

The PowerColor Radeon RX 9060 XT Reaper 16GB is the cheapest way to 16GB of VRAM on Amazon UK, at £479.99 at the time of writing (October 2026). It averages 98.3 fps at 1080p and 67.3 fps at 1440p in Tom's Hardware's hierarchy, and keeps 45.3 fps at 1080p with ray tracing, where the 8GB RX 9060 XT drops to 33.0 fps.

The PCIe 5.0 x16 interface uses all 16 lanes on an older PCIe 3.0 board, where the x8 RTX 5060 Ti gets half, and the 160 W board power runs from a 450 W power supply. The compromise is upscaling: Tom's Hardware notes FSR frame generation is limited to a 2x boost, where NVIDIA's RTX 50 cards get DLSS 4.5 and Multi Frame Generation. The ASUS Dual Radeon RX 9060 XT 16GB is the same GPU for £499.99.

Three alternatives cover other budgets, at Amazon UK prices on 6 October 2026.

Verdict

8GB of VRAM still covers 1080p without ray tracing, 12GB covers 1440p, and 16GB is the amount to buy for ray tracing, 4K or a card kept for years. The PowerColor Radeon RX 9060 XT Reaper 16GB at £479.99 is the cheapest route to 16GB, while the 16GB RTX 5060 Ti costs £230.00 to £320.00 more than its 8GB twin. The ranked shortlist is in Best graphics card UK 2026.