Replacing RTX A2000 to A6000 cards: the closest RTX PRO Blackwell and RTX Ada cards

RTX A2000, A4000, A5000, A6000 upgrade: the closest current cards

NVIDIA names no successor for the RTX A2000, the RTX A4000, the RTX A4500, the RTX A5000, the RTX A5500 or the RTX A6000. Closest by published figures, which here means the same slot width and board length at similar power, are the NVIDIA RTX PRO 2000 Blackwell for the RTX A2000, the NVIDIA RTX PRO 4000 Blackwell for the RTX A4000, the NVIDIA RTX PRO 4500 Blackwell Workstation Edition for the RTX A4500, A5000 and A5500, and the NVIDIA RTX PRO 5000 Blackwell with 48 GB for the RTX A6000. The Ada cards of the same sizes are the alternative where a fleet is validated on Ada. With a Blackwell card the DisplayPort version and the PCIe generation change, from the RTX PRO 4000 upwards also the power connector, and NVLink is no longer listed.

the matching by slot width, board length and power is ours and no statement of NVIDIA; all figures are from the NVIDIA datasheets named under the next two tables.

The linked articles go through single rows in depth. This page keeps to what a refresh of a whole fleet has to settle: which card goes into which slot, what changes at the connector, and which functions do not carry over.

The RTX A-series cards by NVIDIA's datasheets

NVIDIA datasheets of the RTX A2000 (August 2021, legal line May 2022), RTX A4000 (no date code in the text read), RTX A4500 (2564322, February 2023), RTX A5000 (May 2022), RTX A5500 (March 2022) and RTX A6000 (May 2022); for the RTX A2000 the datasheet gives 8.0 TFLOPS and NVIDIA's line cards 7.9; vGPU releases from NVIDIA's list of supported GPUs of 2 October 2026; read 12 November 2026.

All six models have GDDR6 memory with ECC, a PCIe 4.0 x16 interface, active cooling and four DisplayPort 1.4a outputs, Mini DisplayPort on the RTX A2000. Each has one video encoder; the RTX A5000, A5500 and A6000 have two decoders, the others one, and all decode AV1 without encoding it. The RTX A5500 differs from the RTX A5000 in compute: 10,240 CUDA cores against 8,192 and 34.1 against 27.8 TFLOPS, at the same 24 GB, 230 W and connector.

NVIDIA announced the RTX A5000 and RTX A4000 on 12 April 2021, the RTX A2000 on 10 August 2021 and the RTX A5500 on 22 March 2022. Its line-up page of 8 September 2026 shows all six models in its comparison table under the Ampere architecture, and its product pages compare each card only with "the previous generation" and link to no newer card.

The current cards beside them

NVIDIA datasheets 5322351 (June 2026), 2999417 (January 2024), 5323450 (June 2026), 2895216 (October 2023), 5108623 (April 2026), 2898211 (August 2023) and 5349550 (June 2026); the 16-pin connector of the two Ada cards from NVIDIA's quick start guide, as their datasheets have no connector row. For the RTX PRO 4000 Blackwell the datasheet gives 37 TFLOPS and NVIDIA's product page of 15 October 2026 gives 40. All TFLOPS are peak single-precision rates at the GPU boost clock.

All seven have ECC memory. On every row the Blackwell card has at least the memory bandwidth of the A-series card, and from the RTX PRO 4000 upwards more: 672 against 448 GB/s, 896 against 640 or 768 GB/s, 1,344 against 768 GB/s. The Ada cards have less bandwidth than the A-series cards on the same row (224, 432 and 576 GB/s) and more compute by NVIDIA's single-precision figures. The tier-by-tier view of the two current generations is in RTX Ada vs RTX PRO Blackwell.

We supply all seven current cards across the EU; send us the cards installed today, their number and the workstation models, and we reply with a written quote within one business day.

Workstation GPU refresh 2026: what changes with the new card

Power connector. The RTX A4000 takes a 6-pin PCIe lead, the RTX A4500, A5000 and A5500 one 8-pin PCIe lead, and the RTX A6000 an 8-pin CPU connector (EPS-12V), which is a different plug. NVIDIA's power guidelines for workstation products (version 15, 27 July 2023) rate an 8-pin PCIe connector at 150 W and the slot typically at 75 W, and allow an adapter from two 8-pin PCIe connectors to the CPU plug of the RTX A6000. The current cards from the RTX PRO 4000 upwards have the connector NVIDIA calls PCIe CEM5 16-pin. NVIDIA's quick start guides list an adapter in the box, from one 8-pin PCIe cable for the RTX PRO 4000 Blackwell and from two for the four dual-slot cards. By these box contents, a tower that fed an RTX A4000 through its 6-pin lead needs an 8-pin PCIe lead or a 16-pin cable, and a tower with one 8-pin lead for an RTX A5000 needs a second. NVIDIA publishes no power-supply wattage for the current cards. Card by card: RTX power connectors and power supplies.

NVLink. The datasheets of the RTX A4500, A5000, A5500 and A6000 describe bridges that connect two cards at 112.5 GB/s bidirectional, with pooled memory only for applications that support NVLink. The datasheets of the RTX PRO Blackwell workstation cards list no NVLink, and those of the RTX 4500 Ada and RTX 5000 Ada say "No". A renderer that used two bridged 24 GB cards as 48 GB now needs that memory on one card; among the cards on this page that is the RTX PRO 5000 Blackwell with 48 GB.

vGPU and MIG. NVIDIA's vGPU list of 2 October 2026 carries the RTX A5000, A5500 and A6000 in "Full Support". Of the workstation cards above only the RTX 5000 Ada is on it, from release 16.1; the RTX PRO 5000 Blackwell is listed in its 72 GB version only. For servers the list has the NVIDIA RTX PRO 4500 Blackwell Server Edition from release 20.0, a passive 32 GB card (specs, order page). No A-series card has MIG. The RTX PRO 5000 with 48 GB splits into two 24 GB instances under Linux with driver 575.57.08 or later and the display mode set to compute; see MIG and vGPU on RTX PRO and RTX Ada cards.

DisplayPort and PCIe. The outputs change from DisplayPort 1.4a to 2.1b on the Blackwell workstation cards and stay at 1.4a on Ada. The host interface changes from PCIe 4.0 x16 to PCIe 5.0 x16 on Blackwell, with eight lanes on the RTX PRO 2000; the RTX 2000 Ada has PCIe 4.0 with eight lanes.

Sync board. The datasheets of the RTX A4000 to A6000 name the Quadro Sync II card, which NVIDIA now calls RTX PRO Sync. NVIDIA's sync page of 15 October 2026 lists the RTX PRO 4000, the RTX PRO 4500 Workstation Edition and the RTX PRO 5000 as compatible; the RTX PRO 2000 and the RTX 2000 Ada are not. For the RTX 4500 Ada and the RTX 5000 Ada, NVIDIA's datasheet and its sync page list the card as compatible; the sync table in the 621.14 driver release notes does not.

Drivers. NVIDIA's data-centre driver release notes for 580.196.07 (21 October 2026), 595.112.07 (22 October 2026) and 620.70.06 (4 November 2026) list every A-series card of this page, and the seven current cards are in the same three branches. One branch can serve a mixed fleet while the refresh is under way. The release notes for the Windows driver 621.14 state that Release 620 will be the last branch to support Windows 10; more in our guide to the RTX Enterprise driver for Windows 10 and 11.

Video. The Ada and Blackwell cards encode AV1, which the A-series cards only decode. Two encoders are on the RTX PRO 4000, the RTX PRO 4500 Workstation Edition and both larger Ada cards, three on the RTX PRO 5000.

Compute capability. NVIDIA's CUDA page of 16 October 2026 gives 8.6 for the RTX A2000, A4000, A5000 and A6000 and does not list the RTX A4500 and A5500. The Ada cards of this page have 8.9 and the Blackwell cards 12.0; NVIDIA documents FP8 for Ada and FP4 and FP8 for Blackwell, which matters where the new card also runs AI models.

Which path for which tower

• RTX A2000 in a small tower. The RTX PRO 2000 Blackwell has the same half-height (2.7 in), dual-slot format, uses no power cable and brings 16 GB at the same 288 GB/s. The RTX 2000 Ada is the order for fleets validated on Ada.
• RTX A4000 in a single slot. The RTX PRO 4000 Blackwell is the only card of the seven with one slot width. Check the power lead before the order. Where 16 GB at 70 W is enough, the RTX PRO 2000 Blackwell needs no cable but two slot widths, and NVIDIA's single-precision figure for it, 17 TFLOPS, is below the 19.2 of the RTX A4000.
• RTX A4500. The RTX PRO 4500 Workstation Edition has the same 200 W and board size with 32 GB instead of 20 GB.
• RTX A5000 or A5500. Three cards share the board size. The RTX PRO 4500 Workstation Edition lowers the power to 200 W, the RTX 5000 Ada keeps vGPU, and the RTX PRO 5000 with 48 GB holds the 48 GB of an NVLink pair on one card, at 300 W, 70 W more than one old card.
• RTX A6000. The RTX PRO 5000 with 48 GB has the same memory, power and board size. Work that has outgrown 48 GB is the subject of our comparison of the RTX A6000 and the RTX PRO 6000 Blackwell.

In a branded tower the maker's own list decides. Dell's manual for the Precision 5860 Tower (revision A07, August 2026) lists the RTX A4000, A4500, A5500 and A6000 next to the RTX PRO 2000, 4000, 4500 and 5000 Blackwell, and Lenovo's PSREF for the ThinkStation P7 of 2 September 2026 lists both generations as well. How to read these lists is the subject of RTX PRO cards in Dell, HP and Lenovo workstations. Older Quadro P and T cards in the same fleet are covered in replacing Quadro P1000, T400 and T1000, new builds in our GPU workstation builds, and all cards from 4 to 48 GB in the NVIDIA RTX workstation GPU guide.

Planning a fleet refresh with us

For a refresh we need, for each set of identical machines, the card installed today and the number of machines, the workstation model with its power supply, the applications and their versions, the operating system, and whether NVLink, vGPU or the sync board is in use. With these facts, configuration and compatibility are confirmed per set before the quote.

We supply the cards across the EU, also in larger quantities for IT departments and system builders, as NVIDIA RTX cards in volume describes. The quote comes in writing within one business day, on one European contract with an invoice from Austria; quantities and lead time are confirmed in writing with the quote, and manufacturer warranty is handled through us. Write to us with the list of machines, or send it by e-mail to request@eurokommerz.at. What to state so that the right edition arrives is set out in NVIDIA GPU part numbers.

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